Related InterviewSolutions

• For the reaction, `A+2B to 5C+3D` the rate of formation of C is 0.06 mole/L/sec and final concentration of B is 0.04 mole`//L^(-1)` at 2 sec. Find out the initial concentration of B and also the change in concentration of B.
• Which of the following statements regarding a catalyst is false ?A. It may increase or decrease rate of a reaction.B. It is highly specific in its action.C. It remains unchanged at the end of a chemical reaction.D. A catalyst changes that state of equilibrium in a chemical reaction.
• Assertion (A) : In the preparation of oxygen from `KClO_(3),MnO_(2)` acts as a positive catalyst. Reasson (R ) : `MnO_(2)` decreases the activation energy of the reactionA. Both A and R are correct is the correct explanation of A.B. Both A and R are correct and R is not the correct explanation of A.C. A is correct and R is wrongD. A is wrong and R is correct.
• If the activation energy of forward reaction is four times the amount of energy released `(DeltaH= -10` kcal), what could be the activation energy of the backward reaction ?A. 50 kcalB. 60 kcalC. 40 kcalD. 30 kcal
• `(a) 2A_((g)) hArr 2B_((g))+C(g)` `(b) X_((g)) hArr Y_((g)) + Z_((g))` `(c ) 2P_((g)) hArr Q_((g))+R_((g))` `(d) 2R_((g)) hArr 3S_((g))+2T_((g))` The above reactions are carried out in four separate closed vessels of same volume and same temperature is maintained throughout. If all the reactions are inititained throughout. If all the reactions are initiated with with equal number of moles of the reactants and their degrees of dissociation are same, arrange them in the increasing order of pressure after the reactions attain equilibrium.A. c a d bB. a c b dC. c a b dD. b a c d
• For the reaction involving the formation of 1 mole fo water molecule from hydrogen and oxygen, the rate of rection with respect to reactants is given asA. `r=(1)/(2)(Delta [H_(2)])/(Delta t)`B. `r=-(1)/(2)(Delta [H_(2)])/(Delta t)`C. `r=-(1)/(2)(Delta[O_(2)])/(Delta t)`D. `r=-(Delta[H_(2)])/(Delta t)`
• In the formation of `NH_(3)` from nitrogen and hydrogen, rate with respect to `H_(2) " is" (2)/(3)` the rate of `NH_(3)`.
• The activation energy for the forward reaction of `A+B hArr C+D` is 50 kJ/mole. If the energy of the products is 10 kJ mole more than that of reactants, the activation energy for the formation of reactants from the products isA. 60 kJ/moleB. 30 kJ/moleC. 40 kJ/moleD. 50 kJ/mole
• Write the equilibrium expressions `(K_(C ))` for the decomposition of 2 moles of sulphur trioxide and relate it to `K_(C )` of the reaction carried out with 1 mole and 4 moles of `SO_(3)`, respectively.
• `2A + 4B to 3C + 5D` In the given reaction, the rates of reaction with respect to A, B, C and D are `(a) r_(A) " " (b) r_(B)` `(c ) r_(C ) " " (d) r_(D)` Arrange them in the ascending order of their magnitude.A. a c b dB. a d b cC. a b c dD. d b c a