Key Idea : By comparing the rate and concentration the order of the reaction can be calculated Let the rate of the reaction wrt [CH3COCH3], [Br2] and [H+]are x,y and z respectively. Thus, Rate ∝[CH3COCH3]x[Br2]y[H+]z 5.7×10−5=[0.30]x[0.05]y[0.05]z 5.7×10−5=[0.30]x(0.10)y(0.05)z 1.2×10−4=[0.30]x(0.10)y(0.10)z 3.1×10−4=[0.40]x(0.05)y(0.20)z From Eqs (i) and (ii) y=0 From Eqs (ii) and (iii) z=1 From Eqs (i) and (iv) x=1 Thus, rate law ∝[CH3COCH3][H+] =k[CH3COCH3][H+]
The bromination of acetone that occurs in acid solution is represented by this equation. CH_3 COCH_3(a q)+ Br_2(a q) longrightarrow CH_3 COCH_2 Br(a…
NEET UG 2008 — Chemistry Physical Chemistry
The bromination of acetone that occurs in acid solution is represented by this equation. CH3COCH3(aq)+Br2(aq)⟶CH3COCH2Br(aq)+H+(aq)+Br−(aq) These kinetic data were obtained for given reaction concentrations. Initial concentrations, M[CH3COCH3]0.300.300.300.40[Br2]0.050.100.100.05[H+]0.050.050.100.20Initial rate, disappearance of Br2,Ms−15.7×10−55.7×10−51.2×10−43.1×10−4 Based on these data, the rate equation is
Held on 30 Apr 2008 · Verified 9 Jul 2026.
Options
- A
Rate =k[CH3COCH3][H+]
- B
Rate =k[CH=COCH3][Br2]
- C
Rate =k[CH3COCH3][Br2][H+]2
- D
Rate =k[CH3COCH3][Br2][H+]
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
NEET UG Physical Chemistry in other years
More NEET UG Physical Chemistry questions
For the reaction 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), ΔH = -198 kJ. Which condition favours forward reaction?
The unit of rate constant for a first-order reaction is:
$\begin{aligned} &\text { Consider the following compounds: }\\ &\mathrm{\underline{K}O}_2, \mathrm{H}_2 \mathrm{\underline{O}}_2 \text { and } \mathrm{H}_2 \mathrm{\underline{S}O}_4 \text {. } \end{aligned}$ The oxidation states of the underlined elements in them are, respectively,
If the molar conductivity $\left(\Lambda_{\mathrm{m}}\right)$ of a $0.050 \mathrm{~mol} \mathrm{~L}^{-1}$ solution of a monobasic weak acid is $90 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$, its extent (degree) of dissociation will be [Assume $\Lambda_{+}^{\circ}=349.6 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ and $\left.\Lambda_{-}^{\circ}=50.4 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}.\right]$
If the rate constant of a reaction is $0.03 \mathrm{~s}^{-1}$, how much time does it take for $7.2 \mathrm{~mol} \mathrm{~L}^{-1}$ concentration of the reactant to get reduced to $0.9 \mathrm{~mol} \mathrm{~L}^{-1}$ ? (Given $: \log 2=0.301$ )
Other Chemistry topics for NEET UG
Keep practicing Physical Chemistry
Work through every NEET UG Physical Chemistry PYQ, year by year.