Description : Consider the reaction: `N_(2) + 3H_(2) hArr 2NH_(3)` carried out at constant pressure and temperature. If `DeltaH` and `DeltaU` are change in enthalpy
Last Answer : Consider the reaction: `N_(2) + 3H_(2) hArr 2NH_(3)` carried out at constant pressure and temperature. If ` ... Delta H = 0` D. `Delta H = Delta U`
Description : The enthalpy of formation of ammonia is `-46.0 KJ mol^(-1)` . The enthalpy change for the reaction `2NH_(3)(g)rarr N_(2)(g)+3H_(2)(g)` is :
Last Answer : The enthalpy of formation of ammonia is `-46.0 KJ mol^(-1)` . The enthalpy change for the reaction `2NH_(3)(g) ... mol^(-1)` D. `-92.0 KJ mol^(-1)`
Description : The enthalpy change `(Delta H)` for the reaction `N_(2) (g)+3H_(2)(g) rarr 2NH_(3)(g)` is `-92.38 kJ` at `298 K`. What is `Delta U` at `298 K`?
Last Answer : The enthalpy change `(Delta H)` for the reaction `N_(2) (g)+3H_(2)(g) rarr 2NH_(3)(g)` is `-92.38 kJ` at ` ... -87.42 kJ` C. `-97.34 kJ` D. `-89.9 kJ`
Description : For the dissociation reaction `N_(2)O_($) (g)hArr 2NO_(2)(g)`, the degree of dissociation `(alpha)`interms of `K_(p)` and total equilibrium pressure P
Last Answer : For the dissociation reaction `N_(2)O_($) (g)hArr 2NO_(2)(g)`, the degree of dissociation `(alpha)`interms ... =sqrt((K_(P))/(4P))` D. None of these
Description : `C(s)+O_(2)(g)rarr CO_(2)(g)+94.0` K cal. `CO(g)+(1)/(2)O_(2)(g)rarr CO_(2)(g), Delta H=-67.7` K cal. From the above reactions find how much heat (Kca
Last Answer : `C(s)+O_(2)(g)rarr CO_(2)(g)+94.0` K cal. `CO(g)+(1)/(2)O_(2)(g)rarr CO_(2)(g), Delta H=-67.7` K cal. ... g)` A. `20.6` B. `26.3` C. `44.2` D. `161.6`
Description : Find the name of bacteria in following reactions:- ltBrgt (i) `2NH_(3)+3O_(2)overset((A))to2NO_(2)^(-)+2H^(+)+2H_(2)O` (ii) `2NO_(2)^(-)+O_(2)overset(
Last Answer : Find the name of bacteria in following reactions:- ltBrgt (i) `2NH_(3)+3O_(2)overset((A))to2NO_(2)^(-)+2H^ ... (-)+12H^(+)overset((C))toN_(2)+6H_(2)O`
Description : The enthalpy of formation of `CO(g), CO_(2)(g),N_(2)O(g)` and `N_(2)O_(4)(g)` is `-110,-393,+81` and 10 kJ / mol respectively. For the reaction `N_(2)
Last Answer : The enthalpy of formation of `CO(g), CO_(2)(g),N_(2)O(g)` and `N_(2)O_(4)(g)` is `-110,-393,+81` and 10 ... is A. `-212` B. `+212` C. `+778` D. `-778`
Description : 18.4 g of `N_(2)O_(4)` is taken in a 1 L closed vessel and heated till the equilibrium is reached. `N_(2)O_(4(g))rArr2NO_(2(g))` At equilibrium it is
Last Answer : 18.4 g of `N_(2)O_(4)` is taken in a 1 L closed vessel and heated till the equilibrium is reached. `N_(2)O_(4 ... constant? A. 0.2 B. 2 C. 0.4 D. 0.8
Description : 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
Last Answer : At the equilibrium of the reaction , `N_(2)O_(4)(g)rArr2NO_(2)(g)`, the observed molar mass of `N_(2)O_(4)` is ... A. 28 .4 B. 46 .7 C. 22.4 D. 18 .4
Description : In the reaction `N_(2(g))+O_(2(g))rArr2NO_((g))`at equilibrium the concentrations of `N_(2),O_(2)andNO` are 0.25 , 0.05 and 1 M respectively . Calcula
Last Answer : In the reaction `N_(2(g))+O_(2(g))rArr2NO_((g))`at equilibrium the concentrations of `N_(2),O_(2)andNO` are 0.25 ... .75 M , 0.55 M D. 0.75 M , 0.45 M
Description : Number of acidic oxides among the following is: (a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` (d) `N_(2)O_(4)` (e) `N_(2)O_(5)` (f) `P_(4)O_(6)` (g) `P_(4)O_
Last Answer : Number of acidic oxides among the following is: (a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` (d) `N_(2)O_(4)` (e ... (h) `SO_(3)` (i) `B_(2)O_(3)` (j) `CO`
Description : Potassium acid oxalate `K_(2)C_(2)O_(4).3H_(2)C_(2)O_(4).4H_(2)O` can be oxidized by `MnO_(4)^(-)` in acid medium. Calculate the volume of (in mL) 1 M
Last Answer : Potassium acid oxalate `K_(2)C_(2)O_(4).3H_(2)C_(2)O_(4).4H_(2)O` can be oxidized by ... reacting in acid solution with 5.08 gram of the acid oxalate.
Description : Asseration: `3SnCl_(2)+6HCl+O_(3)rarr3SnCl_(4)+3H_(2)O` is possible reaction showing oxidising nature of `O_(3)`. Reason: `O_(3)` whenever used as oxi
Last Answer : Asseration: `3SnCl_(2)+6HCl+O_(3)rarr3SnCl_(4)+3H_(2)O` is possible reaction showing oxidising ... as oxidising agent essentially liberates `O_(2)`.
Last Answer : Asseration: `3SnCl_(2)+6HCl+O_(3)rarr3SnCl_(4)+3H_(2)O` is possible reaction showing oxidising ... -I is not correct and Statement-II is correct
Description : For the reaction `2CI F_(3)(g) harr CI_(2)(g) +3F_(2)(g) log K_(eq) vs (1)/(T)` (where temperature is in K) curve is obtained as given. Which of the f
Last Answer : For the reaction `2CI F_(3)(g) harr CI_(2)(g) +3F_(2)(g) log K_(eq) vs (1)/(T)` ( ... catalyst at equilibrium D. Removal of `F_(2)(g)` at equilibrium
Description : For the equilibrium Cl2(g) + 2NO(g) ⇌ 2NOCl(g) the concentration of NOCl will increase if the equilibrium is disturbed by ………..
Last Answer : For the equilibrium Cl2(g) + 2NO(g) ⇌ 2NOCl(g) the concentration of NOCl will increase if the equilibrium ... NO c. adding NOCl d. removal of Cl2
Description : `P_(4)(s) + 3OH^(-) (aq) + 3H_(2)O (I) rarr PH_(3) (g) + 3H_(2)PO_(2)^(-) (aq)` In the above equation, the species getting oxidized and reduced respec
Last Answer : `P_(4)(s) + 3OH^(-) (aq) + 3H_(2)O (I) rarr PH_(3) (g) + 3H_(2)PO_(2)^(-) (aq)` In the above equation ... ` C. `P_(4) and H_(2)O` D. `P_(4) and P_(4)`
Description : Number of gaseous oxides among the following at room temperature is: (a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` (d) `NO_(2)` (e) `N_(2)O_(5)` (f) `P_(4)O_
Last Answer : Number of gaseous oxides among the following at room temperature is: (a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` ( ... (4)O_(10)` (h) `SO_(2)` (i) `SO_(3)`
Description : Which of the following is true fo the reacion `H_(2)O(l)hArr H_(2)O(g)` at `100^(@)C` and 1 atmosphere
Last Answer : Which of the following is true fo the reacion `H_(2)O(l)hArr H_(2)O(g)` at `100^(@)C` and 1 atmosphere ... Delta H = Delta E` D. `Delta H = T Delta S`
Description : For the reaction `CO(g) + CI_(2)(g) hArr COCI_(2)(g)` the value of `(K_(c))/(K_(P))`is equal to :-
Last Answer : For the reaction `CO(g) + CI_(2)(g) hArr COCI_(2)(g)` the value of `(K_(c))/(K_(P))`is equal to :- A. `sqrt(RT)` B. RT C. `(1)/(RT)` D. 1.0
Description : Using molar concentrations, what is the unit of `K_(c)` for the reaction ? `CH_(3)OH(g) hArr CO(g) + 2H_(2)(g)`
Last Answer : Using molar concentrations, what is the unit of `K_(c)` for the reaction ? `CH_(3)OH(g) hArr CO(g) + 2H_(2)(g)` A. ... 2)` B. `M^(2)` C. `M^(-1)` D. M
Description : Which of the following chemical reactions will be favoured by low pressure? (A) 2HI ⇌ H2 + I2 (B) N2O2 ⇌ 2NO2 (C) N2 + O2 ⇌ 2NO (D) None of these
Last Answer : (B) N2O2 ⇌ 2NO2
Description : In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffected by pressure changes? (A) 2O3 ⇌ 3O2 (B) N2 + O2 ⇌ 2NO (C) 2NO2 ⇌ N2O4 (D) 2SO2 + O2 ⇌ 2SO3
Last Answer : (B) N2 + O2 ⇌ 2NO
Description : In the reaction; N2 + O2 ⇌ 2NO, increasing the pressure will result in (A) Shifting the equilibrium towards right (B) Shifting the equilibrium towards left (C) No change in equilibrium condition (D) None of these
Last Answer : (C) No change in equilibrium condition
Description : The enthalpy change for the reaction `2C("graphite")+3H_(2)(g)rarrC_(2)H_(6)(g)` is called
Last Answer : The enthalpy change for the reaction `2C("graphite")+3H_(2)(g)rarrC_(2)H_(6)(g ... combustion C. Enthalpy of hydrogenation D. Enthalpy of vaporisation
Description : The value of enthalpy change `(DeltaH)` for the reaction `C_(2)H_(5)OH (l)+3O_(2) (g) rarr 2CO_(2) (g) +3H_(2)O (l)` at `27^(@)C` is `-1366.5 kJ mol^(
Last Answer : The value of enthalpy change `(DeltaH)` for the reaction `C_(2)H_(5)OH (l)+3O_(2) (g) rarr 2CO_(2) (g) + ... 1369. kJ` C. `-1364.0 kJ` D. `-1361.5 kJ`
Description : The decomposition of `N_(2)O_(5)` in chloroform was followed by measuring the volume of `O_(2)` gas evolved : `2N_(2)O_(5)(C C_(4))to2N_(2)O_(4)(C Cl_
Last Answer : The decomposition of `N_(2)O_(5)` in chloroform was followed by measuring the volume of `O_(2)` gas evolved : ... log"(90)/(100)` D. `(100)/(10xx500)`
Description : In how many of the following reactions `N_(2)` gas may be released `{:((a) NH_(4)NO_(2) overset(Delta)rarr,(b) (NH_(4))_(2) Cr_(2)O_(7) overset(Delta)
Last Answer : In how many of the following reactions `N_(2)` gas may be released `{:((a) NH_(4)NO_(2) overset(Delta) ... i) Ba(N_(3))_(2) overset(Delta) rarr):}`
Description : `N_(2)O_(4), (HPO_(2))_(2), H_(2)CO_(3), SO_(2), SO_(3), P_(4)O_(10) H_(2)SO_(4), N_(2)O_(3), HNO_(3), H_(3)PO_(3)`. (a) Among the above compounds, co
Last Answer : `N_(2)O_(4), (HPO_(2))_(2), H_(2)CO_(3), SO_(2), SO_(3), P_(4)O_(10) H_(2)SO_(4), N_(2)O_(3 ... `d pi - p pi` bond are y. Given the answer as `x + y`
Description : Compare the following giving reasons Acidic nature of oxides: `CaO, CO, CO_(2),N_(2)O_(5),SO_(3)`
Last Answer : Compare the following giving reasons Acidic nature of oxides: `CaO, CO, CO_(2),N_(2)O_(5),SO_(3)`
Description : For the equilibrium: `LiCl.3NH_(3(s))hArrLiCl.NH_(3(s))+2NH_(3)`, `K_(p)=9 atm^(2)` at `40^(@)C`. A `5 litre` vessel contains `0.1` mole of `LiCl.NH_(
Last Answer : For the equilibrium: `LiCl.3NH_(3(s))hArrLiCl.NH_(3(s))+2NH_(3)`, `K_(p)=9 atm^(2)` at `40^( ... backward reaction for completion? A. 5 B. 9 C. 3 D. 1
Description : Twenty grams of oxygen gas are compressed at a constant temperature of 30 ˚C to 5%of their original volume. What work is done on the system. A.824 cal B.924 cal C.944 cal D.1124 cal Formula: W = -mRTln (V2/V1) Where R = (1.98 cal/gmole·K) (32 g/gmole)
Last Answer : 1124 cal
Description : For a reaction `2X(s)+2Y(s)rarr 2Cl(l)+D(g)` The `q_(p)` at `27^(@)C` is -28 K Cal. `mol^(-1)`. The `q_(V)` is ___________ K. Cal. `mol^(-1)` :-
Last Answer : For a reaction `2X(s)+2Y(s)rarr 2Cl(l)+D(g)` The `q_(p)` at `27^(@)C` is -28 K Cal. `mol^(-1)`. The `q_( ... . `-27.4` B. `+27.4` C. `-28.6` D. `28.6`
Description : acetaldehyde reacts with a mixture of KCN and `NH_(4)Cl` to give a product X which upon hydrolysis yields alanine. The products X is
Last Answer : acetaldehyde reacts with a mixture of KCN and `NH_(4)Cl` to give a product X which upon ... . a cyanohydrin C. an aminoalcohol D. a chlorohydrin
Description : The heat of combustion of `CH_(4(g)), C_((g))` and `H_(2(g))` at `25^(@)C` are `-212.4` K cal, -94.0 K cal and -68.4 K cal respectively, the heat of f
Last Answer : The heat of combustion of `CH_(4(g)), C_((g))` and `H_(2(g))` at `25^(@)C` are `-212.4` K cal, -94.0 ... .4` K cal C. `-375.2` K cal D. `+212.8` K cal
Description : Heat of reaction for, `CO(g)+1//2O_(2)(g)rarr CO_(2)(g)` at constant V is -67.71 K cal at `17^(@)C` . The heat of reaction at constant P at `17^(@)C`
Last Answer : Heat of reaction for, `CO(g)+1//2O_(2)(g)rarr CO_(2)(g)` at constant V is -67.71 K cal at `17^(@)C` . ... B. `+68.0` K cal C. `-67.4` K cal D. None
Description : The specific heat of water is (A) 0.5 Cal/g (B) 2 Cal/g (C) 1 Cal/g (D) 4 Cal/g
Last Answer : (C) 1 Cal/g
Description : The heat generated in ordinary cement at the end of 3 days is about [ A ] 60 cal/g [ B ] 80 cal/g [ C ] 100 cal/g [ D ] 120 cal/g
Last Answer : [ B ] 80 cal/g
Description : The total number of protons in 10 g of calcium carbonate is `(N_(0) = 6.023 xx 10^(23))` :-
Last Answer : The total number of protons in 10 g of calcium carbonate is `(N_(0) = 6.023 xx 10^(23))` :- A. `1.5057 ... 3.0115 xx 10^(24)` D. `4.0956 xx 10^(24)`
Description : 20.0 kg of `N_(2(g))` and 3.0 kg of `H_(2(g))` are mixed to produce `NH_(3(g))`. The amount of `NH_(3(g))` formed is :-
Last Answer : 20.0 kg of `N_(2(g))` and 3.0 kg of `H_(2(g))` are mixed to produce `NH_(3(g))`. The amount of `NH_(3 ... is :- A. 17 kg B. 34 kg C. 20 kg D. 3 kg
Description : Which of the following cannot dissociated as `PX_(5) hArr PX_(3) + X_(2)`
Last Answer : Which of the following cannot dissociated as `PX_(5) hArr PX_(3) + X_(2)` A. `PF_(5)` B. `PCl_(5)` C. `PBr_(5)` D. `PI_(5)`
Description : For the reaction shown below, which statement is true ? `2Fe+3CdCl_(2)hArr 2FeCl_(3)+3Cd`
Last Answer : For the reaction shown below, which statement is true ? `2Fe+3CdCl_(2)hArr 2FeCl_(3)+3Cd` A. ... . Cd is the reducing agent D. Fe undergoes oxidation
Description : The formation of the oxide `M_(x)O_(y)`per mole of `O_(2)` cinsumed is written a `(2x)/(y)M_((S))+O_(2(g))to(2)/(y)M_(x)O_(y)` the free energy change
Last Answer : The formation of the oxide `M_(x)O_(y)`per mole of `O_(2)` cinsumed is written ... from the following two reactions. Choose the correct statement
Description : How many calories are required to raise the temperature of 20 grams of water from 40 degrees to 60 degrees? w) 40 cal x) 400 cal y) 20 cal z) 200 cal
Last Answer : ANSWER: X -- 400 cal