Question 2261. The half life period of a first order reaction is given by (where, K = rate constant) ?

Question 2262. The rate controlling step for the heterogeneous irreversible catalytic reaction A(g) + B(g) → C(g) is the surface reaction of absorbed A with absorbed B to give adsorbed C. The rate expression for this reaction can then be written as (where, KA, KB and KC are the equilibrium constants and is the rate constant of the rate controlling step) ?

Question 2263. A catalyst______________________?

Question 2264. The reason why a catalyst increases the rate of reaction is that, it______________?

Question 2265. In an exothermic chemical reaction, the reactants compared to the products have__________________?

Question 2266. BET apparatus_______________________?

Question 2267. If CA is the quantity of reactants initially present, the quantity left after ‘n’ half periods will be equal to__________________?

Question 2268. The fractional volume change of the system for the isothermal gas phase reaction, A → 3B, between no conversion and complete conversion is___________________?

Question 2269. For the chemical reaction P → Q, it is found that the rate of reaction doubles as the concentration of ‘P’ is doubled. If the reaction rate is proportional to Cp n, then what is the value of ‘n’ for this chemical reaction ?

Question 2270. The rate constant of a chemical reaction decreases by decreasing the____________________?