Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 20199 AprilEvening Shift
Exam
JEE Main
Year
2019
Date
9 April
Shift
Evening Shift
Subject
Chemistry
Chapter
Chemical Kinetics

JEE Main 2019 · 9 April · Evening Shift · Chemistry · Chemical Kinetics

Consider the given plot of enthalpy of the following reaction...

Consider the given plot of enthalpy of the following reaction between AA and B.B .
A+B→C+D.A + B \to C + D . Identify the incorrect statement.
Consider the given plot of enthalpy of the following reaction between A and B . A + B → C + D . Identify the incorrect

Options

  1. AFormation of AA and BB from CC has highest enthalpy of activation.
  2. BDD is kinetically stable product.
  3. CCC is the thermodynamically stable product.
  4. DActivation enthalpy to form CC is 5kJmol−15kJmo{l}^{- 1} less than that to form D.D .

Correct answer

D. Activation enthalpy to form CC is 5kJmol−15kJmo{l}^{- 1} less than that to form D.D .

Step-by-step solution

A+B→C+DA + B \to C + D
Consider the given plot of enthalpy of the following reaction between A and B . A + B → C + D . Identify the incorrect
Activation enthalpy for C=20−0=20kJ/molC = 20 - 0 = 20kJ / mol
Activation enthalpy for D=15−5=10kJ/molD = 15 - 5 = 10kJ / mol
Practice Chemical Kinetics on Quantrex Academy →

More from Chemical Kinetics

For a reversible reaction R leftharpoons P , at constant temperature, both the forward… JEE Advanced 2026For a first-order reaction R P at a given temperature, k is the rate constant. For this… JEE Advanced 2026Given below are two statements: R=8.314 J K ^ -1 mol ^ -1 and 1 cal =4.2 J Statement I… JEE Main 2026Decomposition of a hydrocarbon follows the equation k = (5.5 × 10^ 11 \,s^ -1 )\,e^… JEE Main 2026For a reaction A arrow P at T K , the half life (t_ 1/2 ) is plotted as a function of… JEE Main 2026First order gas phase reaction A arrow B + C p_i = initial pressure of gas A, p_t = total… JEE Main 2026If the half life of a first order reaction is 6.93 minutes then the time required for… JEE Main 2026Consider the given graph showing variation of reactant concentration with time. Three… JEE Main 2026 Full Chemical Kinetics list All JEE Main PYQs