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 : `C_(6)H_(5)Ohoverset(CH_(3)COCl)underset(NaOH(aq))(rarr)C_(6)H_(5)OCOCH_(3)` the above reaction is an example of
Last Answer : `C_(6)H_(5)Ohoverset(CH_(3)COCl)underset(NaOH(aq))(rarr)C_(6)H_(5)OCOCH_(3)` ... reaction B. Schotten-Baumann reaction C. Acetylation D. Benzoylation
Description : Thiazide diuretics enhance K+ elimination in urine primarily by: A. Inhibiting proximal tubular K+ reabsorption B. Inhibiting Na+ K+-2Cl- cotransport in the ascending limb of loop of Henle C ... in the distal tubular fluid to exchange with interstitial K+ D. Potentiating the action of aldosterone
Last Answer : C. Increasing the availability of Na+ in the distal tubular fluid to exchange with interstitial K
Description : Furosemide acts by inhibiting the following in the renal tubular cell: A. Na+-K+-2Cl– cotransporter B. Na+-Cl– symporter C. Na+-H+ antiporter D. Na+ K+ ATPase
Last Answer : A. Na+-K+-2Cl– cotransporter
Description : (a) What are fuel cells? Explain the electrode reactions involved in the working of H2 – O2 fuel cell. (b) Represent the galvanic cell in which the reaction Zn (s) + Cu2+ (aq) → Zn2+ (aq) + Cu (s) takes place. -Chemistry
Last Answer : (a) Fuel cells : These cells are the devices which convert the energy produced during combustion of fuels like H2, CH4, etc. directly into electrical energy. The electrode reaction for H2 – O2 fuel cell : (b) The galvanic cell may be represented as Zn (s) | Zn2+ (1M) || Cu2+ (1M) | Cu (s)
Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + 2e- ... the redox equation from the standard potential of the cell and predict if the reaction is reactant favoured or product favoured. -Chemistry
Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → = Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V At cathode (reduction) : MnO-4(aq) + 8H+ ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.
Description : Determine the values of equilibrium constant (Kc) and ΔG° for the following reaction : Ni(s) + 2Ag+ (aq) → Ni2+ (aq) + 2Ag(s), E° = 1.05 V (1F = 96500 C mol-1 -Chemistry
Last Answer : According to the formula ΔG° = -nFE° = – 2 × 96500 ×1.05 or ΔG° = -202650 J mol-1 = -202.65 KJ mol-1 Now ΔG° ⇒ -202650 J Mol-1 R = 8.314 J/Mol/K, T = 298 K
Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + ... -reactions and calculate the cell potential from the standard potentials and predict if the reaction is reactant or product favoured. -Chemistry
Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V Af cathode (reduction) : MnO-4(aq) + 8H+ ( ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.
Description : The absolute enthalpy of neutralization of the reaction, `MgO(s)+2HCl(aq.)+H_(2)O(l)` will be
Last Answer : The absolute enthalpy of neutralization of the reaction, `MgO(s)+2HCl(aq.)+H_(2)O(l)` will be A. `57.33" kj ... )` D. Less than `=57.33" kj mol"^(-1)`
Description : Assertion :- Bromide ion is serving as a reducing agent in the reaction `2MnO_(4)^(-)(aq.)+Br^(-)(aq.)+H_(2)Orarr2MnO_(2)(aq.)+BrO_(3)^(-)(aq.)+2OH^(-
Last Answer : Assertion :- Bromide ion is serving as a reducing agent in the reaction `2MnO_(4)^(-)(aq.)+Br^( ... is False. D. If both Assertion & Reason are False.
Description : Assertion :- In the reaction `Zn(s)+cu^(+2)(aq)rarrZn^(+2)(aq)+Cu(s)` `Cu^(+2)` ions act as oxidising agent and Zn atoms act as a reducing agent. Reas
Last Answer : Assertion :- In the reaction `Zn(s)+cu^(+2)(aq)rarrZn^(+2)(aq)+Cu(s)` `Cu^(+2)` ions ... the Reason is False. D. If both Assertion & Reason are False.
Description : In the following reaction `HC_(2)O_(4)^(-)(aq)+PO_(4)^(3-)(aq)hArrHPO_(4)^(-2)(aq)+C_(2)O_(4)^(2-)(aq)`, which are the two Bronsted bases?
Last Answer : In the following reaction `HC_(2)O_(4)^(-)(aq)+PO_(4)^(3-)(aq)hArrHPO_(4)^(-2)(aq)+C_(2)O_(4)^(2-)(aq)` ... 2-)` D. `HC_(2)O_(4)^(-)`and HPO_(4)^(2-)`
Description : Chlorine is prepared in the laboratory by treating manganese dioxide `(MnO_(2))` with aqueous hydrochloric acid according to the reaction, `4HCl_((aq)
Last Answer : Chlorine is prepared in the laboratory by treating manganese dioxide `(MnO_(2))` with aqueous hydrochloric acid according to ... g C. 8.4 g D. 3.65 g
Description : What Mass Of Calcium Carbonate Is Needed For Complete Reaction With The HCl In 2HCl(aq) plus CaCO 3 (s) CaCl 2 (aq) plus H 2 O(l) plus CO 2 (g)?
Last Answer : Need answer
Description : In the reaction 2Li(s)+2H2O(l) âž 2LiOH(aq)+H2(g), which compound is in the gaseous state?
Last Answer : H2
Description : As the surface area of the Zn(s) used in the reaction Zn(s) + 2HCl(aq)--> ZnCl2(aq) + H2(g) is increased, the rate of the reaction willIncreaseDecreaseRemain the Same?
Last Answer : An increase in surface area means an increase in the rate of reaction.
Description : C6H12O6 (aq) + 602(aq) →6CO2(aq) + 6H2O The above reaction is a/an (a) displacement reaction (b) endothermic reaction (c) exothermic reaction (d) neutralisation reaction
Last Answer : Answer: (c)
Description : Sodium reacts with water to form sodium hydroxide and hydrogen gas. The balanced equation which represents the above reaction is (a) Na(s) + 2H20(l) → 2NaOH(aq) + 2H2(g) (b) 2Na(s) + 2H2O(l) → 2NaOH(aq) +H2(g) (c) 2Na(s) + 2H20(l) → NaOH(aq) + 2H2(g) (d) 2Na(s) + H20(l) - 2NaOH(aq) + 2H2(g)
Last Answer : Answer: (b)
Description : Which of the following observations is / are not correct about the given equation: Pb(NO 3 ) 2 (aq) + 2 KI (aq) PbI 2 (s) + 2KNO 3 (aq) (a) PbI 2 is yellow precipitate insoluble in water (b) It is precipitation reaction (c) It is single displacement reaction (d) It is very fast reaction
Last Answer : (c) It is single displacement reaction
Description : ABCD is a parallelogram in which P and Q are the mid-points of opposite sides AB and CD (Fig. 8.48). If AQ intersects DP at S and BQ intersects CP at R, show that -Maths 9th
Last Answer : Solution :-
Description : The middle points of the parallel sides AB and CD of a parallelogram ABCD are P and Q respectively. If AQ and CP divide the diagonal BD -Maths 9th
Last Answer : answer:
Description : What is Ka for H3BO3(aq) = H+(aq)+H2BO3 -(aq)?
Last Answer : Ka= [H+] [H2BO3-] / [h3BO3] (Apex)
Description : Find the work done is calorie when `65.5g` Zn reacts with excess `H_(2)SO_(4)` (aq) to form `ZnSO_(4)` & `H_(2)` in a closed rigid vessel at `300 K`.
Last Answer : Find the work done is calorie when `65.5g` Zn reacts with excess `H_(2)SO_(4)` (aq) to form `ZnSO_(4)` & `H_ ... `. A. -600 B. 0 C. `-1200` D. `-2494`
Description : Assertion :- `Zn(s)+Cu^(+2)(aq)rarr Zn^(+2)(aq)+Cu(s)` can be spilt into following half reactions `{:(Zn(s)rarrZn^(+2)+2e^(-),),(,"(Oxidation half rea
Last Answer : Assertion :- `Zn(s)+Cu^(+2)(aq)rarr Zn^(+2)(aq)+Cu(s)` can be spilt into following half ... Reason is False. D. If both Assertion & Reason are False.
Description : `0.01` M HA (aq.) is `2%` dissociated, `[OH^(-)]` of solution is :
Last Answer : `0.01` M HA (aq.) is `2%` dissociated, `[OH^(-)]` of solution is : A. `2xx10^(-4)` B. `10^(-8)` C. `5xx10^(-11)` D. `2xx10^(-12)`
Description : How many of these reactions are homogeneously catalyzed ? (i) `2SO_(2)(g) + O_(2)(g) overset(NO(g))to 2SO_(3)(g)` (ii) `C_(12)H_(22)O_(11)(aq.) + H_(2
Last Answer : How many of these reactions are homogeneously catalyzed ? (i) `2SO_(2)(g) + O_(2)(g) overset(NO(g))to ... (2)(g)overset(Ni(s))to` Vegetable ghee (s).
Description : Ethylidene chloride on treatement with aq. KOH gives
Last Answer : Ethylidene chloride on treatement with aq. KOH gives A. `CH_(3)CHO` B. `(CH_(2)OH)_(2)` C. HCHO D. `(CHO)_(2)`
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 : Which of the following ions dissolve in excess of aq. `NH_(3)`
Last Answer : Which of the following ions dissolve in excess of aq. `NH_(3)` A. `Al^(3+)` B. `Cu^(2+)` C. `Ag^(+)` D. `Zn^(2+)`
Description : Oxalic acid, `H_(2)C_(2)O_(4)`, reacts with paramagnet ion according to the balanced equation `5H_(2)C_(2)O_(4)(aq)+2MnO_(4)^(-)(aq)+6H^(+)(aq)hArr2Mn
Last Answer : Oxalic acid, `H_(2)C_(2)O_(4)`, reacts with paramagnet ion according to the balanced equation `5H_(2)C_(2)O_(4)(aq ... A. 13.6 B. 18.5 C. 33.8 D. 84.4
Description : `5H_(2)C_(2)O_(4)(aq)+2MnO_(4)(aq)+6H^(+)(aq) to 2Mn^(2+)(aq)+10CO_(2)(g)+8H_(2)O(l)` Oxalic acid, `H_(2)C_(2)O_(2)` , reacts with permanganate ion ac
Last Answer : `5H_(2)C_(2)O_(4)(aq)+2MnO_(4)(aq)+6H^(+)(aq) to 2Mn^(2+)(aq)+10CO_(2)(g)+8H_(2)O(l)` Oxalic acid, `H_ ... A. 13.5 mL B. 18.5 mL C. 33.8 mL D. 84.4 mL
Description : Oxalic acid, `H_(2)C_(2)O_(4)`, reacts with paramagnet ion according to the balanced equation `5H_(2)C_(2)O_(4)(aq)+2MnO_(4)^(-)hArr2Mn^(2+)(aq)+10CO_
Description : `Co^(2+)(aq.)+SCN^(-) (aq.) to "Complex"(X)` `Ni^(2+)(aq.) +"Dimethylglyoxime" overset(NH_(4)OH) to "Complex"(Y)` The coordination number of cobalt an
Last Answer : `Co^(2+)(aq.)+SCN^(-) (aq.) to "Complex"(X)` `Ni^(2+)(aq.) +"Dimethylglyoxime" overset(NH_ ... (Y) is diamagnetic D. (X) and (Y) both are diamagnetic.
Last Answer : `Co^(2+)(aq.)+SCN^(-) (aq.) to "Complex"(X)` `Ni^(2+)(aq.) +" ... both tetrahedral C. square planar and tetrahedral D. both square planar.
Last Answer : `Co^(2+)(aq.)+SCN^(-) (aq.) to "Complex"(X)` `Ni^(2+)(aq.) +" ... . tetrathiocyanoato-S-cobaltate(III) and bis(dimethylglyoximato) nickel (II).
Description : The equilibrium, H2O(l) ⇌ H^+(aq) + OH^-(aq) is :
Last Answer : The equilibrium, H2O(l) ⇌ H+(aq) + OH-(aq) is : a. dynamic b. static c. physical d. mechanical
Description : The Hinsberg test of a `C_(5)H_(14)N_(2)` compound produces a solid that is insoluble in 10% aq. `NaOH`. This solid derivative dissolves in `10%` aq.
Last Answer : The Hinsberg test of a `C_(5)H_(14)N_(2)` compound produces a solid that is insoluble in 10% aq. `NaOH` ... would best fit these facts ? A. B. C. D.
Description : `4M(s)+overset(Ө)(C)N(aq.)+2H_(2)O(aq.)+O_(2)(g)` `" " to 4[M(CN)_(2)]^(Ө)(aq.)+4overset(Ө)(O)H(aq.)
Last Answer : `4M(s)+overset(Ө)(C)N(aq.)+2H_(2)O(aq.)+O_(2)(g)` `" " to 4[M(CN)_(2)]^(Ө)(aq.)+4overset(Ө)(O)H(aq.) A ... 2)` D. `[Ag(CN)_(2)]^(-),[Zn(CN)_(4)]^(-2)`
Description : Oxygen and hydrogen gases are produced at the anode and cathod erespectively during electrolysis of dilute aq. Solution of
Last Answer : Oxygen and hydrogen gases are produced at the anode and cathod erespectively during electrolysis of dilute aq. Solution ... (3)` C. HCl D. `CuSO_(4)`
Description : Which one of the following does not give tetrathionate as the product, when treated with an aq solution of hypo?
Last Answer : Which one of the following does not give tetrathionate as the product, when treated with an aq solution of hypo? A. ... )` C. `CuC1_(2)` D. `FeC1_(3)`
Description : When a compound X reacts with ozone in aq medium, a compound Y is produced. Ozone also reacts with moist Y and produces compound Z. Z acts as an oxidi
Last Answer : When a compound X reacts with ozone in aq medium, a compound Y is produced. Ozone also reacts with moist Y and ... `X=HI, Y=I_(2) and Z=HIO_(4)`
Description : Assertion: A white precipitate is obtained when an aq solution of sodium thiosuphate is treated with `AgNO_(3)` solution and if the precipitate is hea
Last Answer : Assertion: A white precipitate is obtained when an aq solution of sodium thiosuphate is treated with ... I is not correct and Statement-II is correct
Description : Assertion : A white turbidity is obtained by passing `H_(2)S` through aq solution of `SO_(2)` Reason: Aq solution of `SO_(2)` and `H_(2)S` undergoes r
Last Answer : Assertion : A white turbidity is obtained by passing `H_(2)S` through aq solution of `SO_(2 ... Statement-I is not correct and Statement-II is correct
Description : A small iodine crystal is added to each of the following aq solutions: I. sodium sulphate II. Sodiumthiosulphate III. Sodium tetrathionate IV. Sulphur
Last Answer : A small iodine crystal is added to each of the following aq solutions: I. sodium sulphate II. Sodiumthiosulphate ... only in III and IV D. only in II
Description : Are single-displacement reactions A.AgNO3 (aq) plus NaCl (aq) AgCl (s) plus NaNO3 (aq) B.2Fe(s) plus 6HCI (g) 2FeCl3 (s) plus 3H2 (g) C.2Al (s) plus 3CuCl2 (aq) 2AlCl3 (aq) plus 3Cu?
Description : What are the spectator ions in the given balanced chemical equation CaCI2(aq) plus k2CO3(aq) CaCO3 (s) plus 2 KCI (aq)?
Description : Is MgCrO4 a solid or liquid or gas or aq?
Last Answer : Feel Free to Answer