Arrhenius Equation and Activation Energy

JEE Main Chemistry · Chemical Kinetics · 19 questions, latest first

• 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
• 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
• A → B (first reaction); C → D (second reaction) Consider the above two first-order reactions. The rate constant for first…202628 January, Shift 2 · Q74
• Correct statements regarding Arrhenius equation among the following are: A. Factor e^-E a / R T corresponds to fraction of…202622 January, Shift 2 · Q56
• Consider A →k_1 B and C →k_2 D are two reactions. If the rate constant (k_1) of the A → B reaction can be expressed by the…202622 January, Shift 2 · Q73
• The temperature at which the rate constants of the given below two gaseous reactions become equal is ____ K. (Nearest integer) X…202622 January, Shift 1 · Q73
• Pre-exponential factors of two different reactions of same order are identical. Let activation energy of first reaction exceeds…202621 January, Shift 1 · Q75
• Consider the following plots of log of rate constant k( log k) vs 1/T for three different reactions. The correct order of…20254 April, Shift 2 · Q55
• Consider the following statements related to temperature dependence of rate constants. Identify the correct statements. A. The…20253 April, Shift 2 · Q57
• Consider a complex reaction taking place in three steps with rate constants k_1, k_2 and k_3 respectively. The overall rate…202524 January, Shift 2 · Q72
• Consider the given figure and choose the correct option:202522 January, Shift 2 · Q57
• A → B The molecule A changes into its isomeric form B by following a first order kinetics at a temperature of 1000 K. If the…202522 January, Shift 1 · Q73
• Consider the following transformation involving first order elementary reaction in each step at constant temperature as shown…20244 April, Shift 1 · Q85
• For a reaction taking place in three steps at same temperature, overall rate constant K=(K_1 K_2)/(K_3). If Ea_1, Ea_2 and Ea_3…202429 January, Shift 1 · Q87
• The number of given statement/s which is/are correct is ____ The stronger the temperature dependence of the rate constant, the…20238 April, Shift 1 · Q87
• For the adsorption of hydrogen on platinum, the activation energy is 30 k J mol^-1 and for the adsorption of hydrogen on nickel,…20236 April, Shift 1 · Q87
• A → B The rate constants of the above reaction at 200 K and 300 K are 0.03 min^-1 and 0.05 min^-1 respectively. The activation…202331 January, Shift 1 · Q57
• The number of correct statement/s from the following is ____ A. Larger the activation energy, smaller is the value of the rate…202324 January, Shift 1 · Q57