Chemical Kinetics

JEE Main Chemistry · 13 questions

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• Given below are two statements: R=8.314 J K^-1 mol^-1 and 1 cal=4.2 J Statement I: When Ea=12.6 kcal / mol, the room temperature…20268 April, Shift 2 · Q57
• Decomposition of a hydrocarbon follows the equation k=(5.5 × 10^11 s^-1) e^((-28000 K)/T). The activation energy of reaction is…20266 April, Shift 2 · Q75
• Sucrose hydrolyses in acidic medium into glucose and fructose by first order rate law with t_1 / 2=3 hour. The percentage of…20266 April, Shift 1 · Q74
• For a reaction A → P at T K, the half life (t_1 / 2) is plotted as a function of initial concentration [A]_0 of A as given below.…20265 April, Shift 2 · Q75
• First order gas phase reaction A → B+C p_i= initial pressure of gas A, p_t= total pressure of the reaction mixture at time t…20265 April, Shift 1 · Q57
• If the half life of a first order reaction is 6.93 minutes then the time required for completion of 99 % of the reaction will be…20265 April, Shift 1 · Q75
• Consider the given graph showing variation of reactant concentration with time. Three different reactions were started with…20264 April, Shift 2 · Q63
• For a first order reaction A → B x= ____ min. (Nearest integer)20264 April, Shift 2 · Q74
• Consider the first order reaction R → P. The fraction of molecules decomposed in the given first order reaction can be expressed…20264 April, Shift 1 · Q57
• Consider the reaction aX → bY, for which the rate constant at 30^° C is 1 × 10^-3 mol^-1 Ls^-1. Which of the following statements…20262 April, Shift 2 · Q57
• Consider the following gas phase reaction being carried out in a closed vessel at 25^° C. 2 A( g) → 4 B( g)+C( g) The pressure of…20262 April, Shift 2 · Q72
• t_100 % is the time required for the 100 % completion of the reaction while t_1 / 2 is the time required for 50 % of the reaction…20262 April, Shift 1 · Q58
• For reaction A → P, rate constant k=1.5 × 10^3 s^-1 at 27^° C If activation energy for the above reaction is 60 kJ mol^-1, then…20262 April, Shift 1 · Q74