What is a dissociation reaction ?

What is a dissociation reaction ?
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Answer :

The process of breaking down a compound into several compounds or elements is called dissociation reaction.
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At the equilibrium of the reaction , `N_(2)O_(4)(g)rArr2NO_(2)(g)`, the observed molar mass of `N_(2)O_(4)` is 77.70 g . The percentage dissociation o

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For the dissociation reaction `N_(2)O_($) (g)hArr 2NO_(2)(g)`, the degree of dissociation `(alpha)`interms of `K_(p)` and total equilibrium pressure P

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Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in __________ of the catalyst. (A) Stabilisation (B) Increasing the effectiveness (C) Improving the strength & heat resistance (D) All a, b & c

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In the reversible reaction of the type, A + B ⇌ AB, in general (A) Both forward and backward reactions will be exothermic (B) Neither of the reactions will be endothermic (C) The combination reaction will be exothermic, while the dissociation reaction will be endothermic (D) The combination reaction will be endothermic, while the dissociation reaction will be exothermic

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Nickel is not used as a catalyst in the __________ reaction. (A) Shift conversion (B) Oil hydrogenation (C) Steaming reforming of naphtha (D) Ammonia cracking/dissociation

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Last Answer : (A) Shift conversion

Which of the following is an endothermic reaction? (A) Absorption of SO3 in 98% H2SO4 (B) C + H2O = CO + H2 (C) Thermal dissociation of iron pyrites (D) Both (B) and (C)

Description : Which of the following is an endothermic reaction? (A) Absorption of SO3 in 98% H2SO4 (B) C + H2O = CO + H2 (C) Thermal dissociation of iron pyrites (D) Both (B) and (C)

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How is the stability of a co-ordination compound in solution decided ? How is the dissociation constant of a complex defined? -Chemistry

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Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has – (1) high bond dissociation energy (2) smaller atomic radius (3) stable half filled 2p sub level (4) high nuclear charge

Description : Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has – (1) high bond dissociation energy (2) smaller atomic radius (3) stable half filled 2p sub level (4) high nuclear charge

Last Answer : (3) stable half filled 2p sub level Explanation: Ionization energy is a measure of the ease in which atoms lose electrons and become positive ions.

The degree of dissociation of an electrolyte depends on - (1) dilution (2) impurities (3) atmospheric pressure (4) method of dissolution

Description : The degree of dissociation of an electrolyte depends on - (1) dilution (2) impurities (3) atmospheric pressure (4) method of dissolution

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What is the difference between dissociation and ionization?

Description : What is the difference between dissociation and ionization?

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What happens to the dissociation of PCl5 in a closed vessel if He gas is introduced into it at the same temperature?

Description : What happens to the dissociation of PCl5 in a closed vessel if He gas is introduced into it at the same temperature?

Last Answer : Ans. No effect.

Define Bond length& Bond dissociation enthalpy

Description : Define Bond length& Bond dissociation enthalpy

Last Answer : Ans. The equilibrium distance between the centre s of the nuclei of two bonded atoms is called bond length. The energy required to break a bond is called bond dissociation enthalpy.

Which describes the bond strength or bond dissociation energy? (a) energy required to break a bond (b) energy released when a bond breaks(c) energy released when a bond is formed(d) (a) and (c)

Description : Which describes the bond strength or bond dissociation energy? (a) energy required to break a bond (b) energy released when a bond breaks (c) energy released when a bond is formed (d) (a) and (c)

Last Answer : (a) and (c)

The difference in the osmotic pressures of one molar solutions of different compounds in a given solvent at a given temperature results from? w) Different values for R x) Different values for Avogadro's number y) Ionization or dissociation z) None of the above

Description : The difference in the osmotic pressures of one molar solutions of different compounds in a given solvent at a given temperature results from? w) Different values for R x) Different values for Avogadro's number y) Ionization or dissociation z) None of the above

Last Answer : ANSWER: Y -- IONIZATION OR DISSOCIATION 

My theory of electrolytic dissociation earned me t 1903 Nobel Prize in chemistry. My name is: w) Niels Bohr x) Svante Arrhenius y) Michael Faraday z) John Cavendish

Description : My theory of electrolytic dissociation earned me t 1903 Nobel Prize in chemistry. My name is: w) Niels Bohr x) Svante Arrhenius y) Michael Faraday z) John Cavendish

Last Answer : ANSWER: X -- SVANTE ARRHENIUS

The degree of dissociation of an electrolyte depends on (1) dilution (2) impurities (3) atmospheric pressure (4) method of dissolution

Description : The degree of dissociation of an electrolyte depends on (1) dilution (2) impurities (3) atmospheric pressure (4) method of dissolution

Last Answer : dilution

Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has (1) high bond dissociation energy (2) smaller atomic radius (3) stable half filled 2p sub level (4) high nuclear charge

Description : Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has (1) high bond dissociation energy (2) smaller atomic radius (3) stable half filled 2p sub level (4) high nuclear charge

Last Answer : stable half filled 2p sub level

Cement is made hard with (1) dehydration (2) hydration and dissociation of water (3) Dissociation of water (4) Polymerisation

Description : Cement is made hard with (1) dehydration (2) hydration and dissociation of water (3) Dissociation of water (4) Polymerisation

Last Answer : hydration and dissociation of water

Baryllium Sulphate is less soluble in water due to (1) High inflammable energy (2) Low Energy of dissociation (3) Low inflammable energy (4) Lonic band

Description : Baryllium Sulphate is less soluble in water due to (1) High inflammable energy (2) Low Energy of dissociation (3) Low inflammable energy (4) Lonic band

Last Answer : High inflammable energy

What survival benefit does dissociation serve?

Description : What survival benefit does dissociation serve?

Last Answer : answer:It’s a tactic for getting through the immediate crisis, not getting through the next 10 years. Dissociating isn’t like your brain just shuts off, it’s like the emotion parts and the reality parts shut off, and you go into fight-or-flight mode.

What is atomic dissociation ?

Last Answer : absolute + molecule = atom

Assertion `:-` In the alveoli, dissociation of `CO_(2)` from carbamino-haemoglobin takes place Reason `:-` In the alveoli `P_(CO_(2))` is low and `P_(

Description : Assertion `:-` In the alveoli, dissociation of `CO_(2)` from carbamino-haemoglobin takes place Reason `:-` In the alveoli `P_(CO_(2))` is low and `P_(

Last Answer : Assertion `:-` In the alveoli, dissociation of `CO_(2)` from carbamino-haemoglobin takes place Reason ` ... . D. If both Assertion & Reason are false.

Assertion `:-` Low concentration of oxygen allow dissociation of oxyhaemoglobin. Reason `:-` CO has more affinity with Haemoglobin as compares to oxyg

Description : Assertion `:-` Low concentration of oxygen allow dissociation of oxyhaemoglobin. Reason `:-` CO has more affinity with Haemoglobin as compares to oxyg

Last Answer : Assertion `:-` Low concentration of oxygen allow dissociation of oxyhaemoglobin. Reason `:-` CO has more ... D. If both Assertion & Reason are false.

Assertion `:-` Bohr effect occur at the level of alveoli of lungs. Reason `:-` High concentratio of `CO_(2)` allow dissociation of oxyhaemoglobin.

Description : Assertion `:-` Bohr effect occur at the level of alveoli of lungs. Reason `:-` High concentratio of `CO_(2)` allow dissociation of oxyhaemoglobin.

Last Answer : Assertion `:-` Bohr effect occur at the level of alveoli of lungs. Reason `:-` High concentratio ... False. D. If both Assertion & Reason are false.

Assertion `:-` In the tissue high `P_(O_(2))`, low `P_(CO_(2))`, higher `H^(o+)` concentration conditions are favourable for dissociation of oxygen fr

Description : Assertion `:-` In the tissue high `P_(O_(2))`, low `P_(CO_(2))`, higher `H^(o+)` concentration conditions are favourable for dissociation of oxygen fr

Last Answer : Assertion `:-` In the tissue high `P_(O_(2))`, low `P_(CO_(2))`, higher `H^(o+)` ... Reason is False. D. If both Assertion & Reason are false.

Given below graphs an oxygen dissociation curve `:-` Where in the body will haemoglobin be saturation at the percentage shown at points X,Y and Z.

Description : Given below graphs an oxygen dissociation curve `:-` Where in the body will haemoglobin be saturation at the percentage shown at points X,Y and Z.

Last Answer : Given below graphs an oxygen dissociation curve `:-` Where in the body will haemoglobin be ... ventricle , Y-Right ventricle, Z-Systemic artery

The oxygen - haemoglobin dissociation curve will show a right shift in case of

Description : The oxygen - haemoglobin dissociation curve will show a right shift in case of

Last Answer : The oxygen - haemoglobin dissociation curve will show a right shift in case of A. High `pCO_(2)` B. High ... `pCO_(2)` D. Less `H^(+)` concentration

Oxygen dissociation curve shifts to right when `:-`

Description : Oxygen dissociation curve shifts to right when `:-`

Last Answer : Oxygen dissociation curve shifts to right when `:-` A. `P_(o_(2))` decreases B. `P_(Co_(2))` decreases C. pH increases D. Temperature decreases

The oxygen Haemoglobin dissociation curve will show a right shift in case of `:-`

Description : The oxygen Haemoglobin dissociation curve will show a right shift in case of `:-`

Last Answer : The oxygen Haemoglobin dissociation curve will show a right shift in case of `:-` A. Less `H^(+)` concentration B. ... `CO_(2)` D. High 2,3, D.P.G.

Dissociation curve shifts to the right when

Description : Dissociation curve shifts to the right when

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Decrease in pH causes `O_(2)` dissociation curve of haemoglobin to shift to

Description : Decrease in pH causes `O_(2)` dissociation curve of haemoglobin to shift to

Last Answer : Decrease in pH causes `O_(2)` dissociation curve of haemoglobin to shift to A. shift of ... right C. remain unchanged D. will oscillate erratically

Oxygen dissociation curve of haemoglobin is

Description : Oxygen dissociation curve of haemoglobin is

Last Answer : Oxygen dissociation curve of haemoglobin is A. Hyperbolic B. Sigmoid C. Straight D. Constant

Body tissues obtain oxygen from haemoglobin because of its dissociation in tissues caused by

Description : Body tissues obtain oxygen from haemoglobin because of its dissociation in tissues caused by

Last Answer : Body tissues obtain oxygen from haemoglobin because of its dissociation in tissues caused by A. Low ... concentration D. High `CO_(2)` concentration

Oxygen haemoglobin dissociation curve will shift to right on decrease of

Description : Oxygen haemoglobin dissociation curve will shift to right on decrease of

Last Answer : Oxygen haemoglobin dissociation curve will shift to right on decrease of A. Acidity B. Carbon dioxide concentration C. Temperature D. pH

Assertion :- Bond Dissociation energy is `F_(2) gt Cl_(2)` Reason:- `Cl_(2)` have more electronic repulsion than `F_(2)`.

Description : Assertion :- Bond Dissociation energy is `F_(2) gt Cl_(2)` Reason:- `Cl_(2)` have more electronic repulsion than `F_(2)`.

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Bond dissociation enthalpy of `H_(2)` , `Cl_(2)` and `HCl` are `434, 242` and `431KJmol^(-1)` respectively. Enthalpy of formation of `HCl` is

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Last Answer : Bond dissociation enthalpy of `H_(2)` , `Cl_(2)` and `HCl` are `434, 242` and `431KJmol^(-1)` respectively. ... kJ mol^(-1)` D. `-245 kJ mol^(-1)`

In the dissociation of `I_(2)(g)` at 1000 K in a container of 1 litre :- `I_(2)(g)rArr2I^(-)(g),K_(c)=10^(10)` Select the correct relation :-

Description : In the dissociation of `I_(2)(g)` at 1000 K in a container of 1 litre :- `I_(2)(g)rArr2I^(-)(g),K_(c)=10^(10)` Select the correct relation :-

Last Answer : In the dissociation of `I_(2)(g)` at 1000 K in a container of 1 litre :- `I_(2)(g)rArr2I^(-)(g),K_(c)=10^(10)` ... I^(-)]` D. `[I_(2)]=(1)/(2)[I^(-)]`

`ArArr2B,K_(p),CrArrD+E,K_(p)` . If degrees of dissociation of A and C are same and `K_(p)=2K_(p)`, then the ratio of total presure `p//p=`?

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The decreasing order of bond dissociation energy of C-H bond in given compound is :- (A) `CH_(3)-H` (B) `CH_(3)-CH_(2)-H` `CH_(2)=CH-CH_(2)-H` (D)

Description : The decreasing order of bond dissociation energy of C-H bond in given compound is :- (A) `CH_(3)-H` (B) `CH_(3)-CH_(2)-H` `CH_(2)=CH-CH_(2)-H` (D)

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The dissociation curve is associated with

Description : The dissociation curve is associated with

Last Answer : The dissociation curve is associated with A. Carbonic of erythrocytes B. Carbon dioxide C. Oxygen D. Oxyhaemoglobin

Which of the following repressents correct dissociation of nitrate salts on heating

Description : Which of the following repressents correct dissociation of nitrate salts on heating

Last Answer : Which of the following repressents correct dissociation of nitrate salts on heating A. `2LiNO_(3) rarr Li_(2)O + ... 4)NO_(2) rarr N_(2) + 2H_(2)O`

Dissociation of `CO_(2)` from carbamino-haemoglobin takes place when:

Description : Dissociation of `CO_(2)` from carbamino-haemoglobin takes place when:

Last Answer : Dissociation of `CO_(2)` from carbamino-haemoglobin takes place when:

`O_(2)` dissociation curve is:

Description : `O_(2)` dissociation curve is:

Last Answer : `O_(2)` dissociation curve is:

Which of the following repressents correct dissociation of nitrate salts on heating

Description : Which of the following repressents correct dissociation of nitrate salts on heating

Last Answer : Which of the following repressents correct dissociation of nitrate salts on heating A. `2LiNO_(3) rarr Li_(2)O + ... 4)NO_(2) rarr N_(2) + 2H_(2)O`

Dissociation of `CO_(2)` from carbamino-haemoglobin takes place when:

Description : Dissociation of `CO_(2)` from carbamino-haemoglobin takes place when:

Last Answer : Dissociation of `CO_(2)` from carbamino-haemoglobin takes place when:

`O_(2)` dissociation curve is:

Description : `O_(2)` dissociation curve is:

Last Answer : `O_(2)` dissociation curve is:

With respect to halogens, four statements are given below: (P) The bond dissociation energies for halogens are in the order: `I_(2) lt F_(2) lt Br_(2)

Description : With respect to halogens, four statements are given below: (P) The bond dissociation energies for halogens are in the order: `I_(2) lt F_(2) lt Br_(2)

Last Answer : With respect to halogens, four statements are given below: (P) The bond dissociation energies for halogens are in ... ,III,IV C. II,III,IV D. I,III

The X - X bond dissociation energy is minimum in:

Description : The X - X bond dissociation energy is minimum in:

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Which of the following acids has the smallest dissociation constant?

Description : Which of the following acids has the smallest dissociation constant?

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Which of the following compounds prossesses the `C-H` bonds with the lowest bond dissociation energy?

Description : Which of the following compounds prossesses the `C-H` bonds with the lowest bond dissociation energy?

Last Answer : Which of the following compounds prossesses the `C-H` bonds with the lowest bond dissociation energy? ... B. n-pentane C. Benzene D. Toluene