Question

Fill up the following with suitable terms

(i) Activation energy = Threshold energy - _______

(ii) Half-life period of zero order reaction = _______

(iii) Average rate of reaction = _________

(iv) Instantaneous rate of reaction = ________

(i) (ii) (iii) (iv)

• A. Potential energy $\frac{0.693}{k}$ $\frac{dx}{dt}$ $\frac{\Delta\lbrack A\rbrack}{\Delta t}$
• B. Energy of reaction $\frac{1}{k}$ $\frac{\Delta\lbrack A\rbrack}{\Delta t}$ $\frac{dx}{dt}$
• C. Energy of reaction $\frac{\log k}{t}$ $\frac{\Delta\lbrack A\rbrack}{\Delta t}$ $\frac{dx}{dt}$
• D. Average kinetic $\frac{a}{2k}$ $\frac{\Delta\lbrack A\rbrack}{\Delta t}$ $\frac{dx}{dt}$ energy of reactant

Answer 1

Answer: (D)

Average kinetic $\frac{a}{2k}$ $\frac{\Delta\lbrack A\rbrack}{\Delta t}$ $\frac{dx}{dt}$

energy of reactant

Answer 2

(i) Activation energy = Threshold energy – Average

energy of reactants

(ii) $t_{1/2}$ for zero order reaction $= \frac{a}{2k}$

(iii) Average rate of reaction $= \frac{\Delta\lbrack A\rbrack}{\Delta t}$

(iv) Instantaneous rate of reaction $= \frac{dx}{dt}$