Q33. Which of the following reaction has fractional order with respect to one of the sreactants?
(a)

Q: What is the correct answer for CUET UG Chemistry Q33?

The correct answer is B. Reaction orders are determined experimentally.(a) 2NO(g) + O2(g) → 2NO2(g): The rate law for this reaction is typically found to be Rate = k[NO]²[O2], which has integral orders.(b) CHCl3 + Cl2 → CCl4 + HCl: The mechanism for this reaction often leads to a rate law of Rate = k[CHCl3][Cl2]^(1/2), which has a fractional order (1/2) with respect to Cl2.(c) CH3COOC2H5 + H2O → CH3COOH + C2H5OH: Acid-cat

Q: Q33. Which of the following reaction has fractional order with respect to one of the sreactants? (a) 2NO(g) + O2(g) → 2NO2(g) (b) CHCl3 + Cl2 → CCl4 + HCI (c) CH3 COOC2H5 + H2O → CH3COOH + C2H5OH (d)…

The correct answer is B. Reaction orders are determined experimentally.(a) 2NO(g) + O2(g) → 2NO2(g): The rate law for this reaction is typically found to be Rate = k[NO]²[O2], which has integral orders.(b) CHCl3 + Cl2 → CCl4 + HCl: The mechanism for this reaction often leads to a rate law of Rate = k[CHCl3][Cl2]^(1/2), which has a fractional order (1/2) with respect to Cl2.(c) CH3COOC2H5 + H2O → CH3COOH + C2H5OH: Acid-cat

Q: What are the options for this CUET UG Chemistry question?

A. (a) 2NO(g) + O2(g) → 2NO2(g) · B. (b) CHCl3 + Cl2 → CCl4 + HCI · C. (c) CH3 COOC2H5 + H2O → CH3COOH + C2H5OH · D. (d) CH3 COOC2H5 + NaOH → CH3 COONa + C2H5OH

Question

Q33. Which of the following reaction has fractional order with respect to one of the sreactants?
(a) 2NO(g) + O2(g) → 2NO2(g)
(b) CHCl3 + Cl2 → CCl4 + HCI
(c) CH3 COOC2H5 + H2O → CH3COOH + C2H5OH
(d) CH3 COOC2H5 + NaOH → CH3 COONa + C2H5OH

FirstInTest · Accepted Answer

Reaction orders are determined experimentally.(a) 2NO(g) + O2(g) → 2NO2(g): The rate law for this reaction is typically found to be Rate = k[NO]²[O2], which has integral orders.(b) CHCl3 + Cl2 → CCl4 + HCl: The mechanism for this reaction often leads to a rate law of Rate = k[CHCl3][Cl2]^(1/2), which has a fractional order (1/2) with respect to Cl2.(c) CH3COOC2H5 + H2O → CH3COOH + C2H5OH: Acid-catalyzed ester hydrolysis is typically pseudo-first order (first order with respect to ester concentration if water is in large excess).(d) CH3COOC2H5 + NaOH → CH3COONa + C2H5OH: Base-catalyzed ester hydrolysis is second order (first order with respect to ester and first order with respect to hydroxide ion).Therefore, (b) is the reaction with a fractional order with respect to one of the reactants.

Answer

(a) 2NO(g) + O2(g) → 2NO2(g)

Answer

(b) CHCl3 + Cl2 → CCl4 + HCI

Answer

(c) CH3 COOC2H5 + H2O → CH3COOH + C2H5OH

Answer

(d) CH3 COOC2H5 + NaOH → CH3 COONa + C2H5OH

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