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Chemical Kinetics

Question

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At 518⁰C the rate of decomposition of a sample of gaseous acetaldehyde initially at a pressure of 363 Torr, was 1.00 Torr s^–1 when 5% had reacted and 0.5 Torr s^–1 when 33% had reacted. The order of the reaction is

0

2

3

1

Solution

$C H_{3} C H O \overset{}{\to} C H_{4} + C O$

r₁ = 1 torr sec–1 , when 5% reacted (95% unreacted)

r₂ = 0.5 torr sec–1 , when 33% reacted (67% unreacted)
r ∝ (a – x)^m

Where,

m = order of reaction
a–x = unreacted

$\frac{r_{1}}{r_{2}} = {[\frac{(a - x_{1})}{(a - x_{2})}]}^{m} \frac{1}{0.5} = {(\frac{0.95}{0.67})}^{m} 2 = (1.41)^{m} \Rightarrow 2 = (\sqrt{2})^{m} \Rightarrow m = 2$

Some More Questions From Chemical Kinetics Chapter

The conversion of molecules X to Y follows second order kinetics. If concentration of X is increased to three times how will it affect the rate of formation of Y?

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Chemical Kinetics

At 518⁰C the rate of decomposition of a sample of gaseous acetaldehyde initially at a pressure of 363 Torr, was 1.00 Torr s^–1 when 5% had reacted and 0.5 Torr s^–1 when 33% had reacted. The order of the reaction is

0

2

3

1

Some More Questions From Chemical Kinetics Chapter

The conversion of molecules X to Y follows second order kinetics. If concentration of X is increased to three times how will it affect the rate of formation of Y?

What will be the effect of temperature on rate constant?

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Chemical Kinetics

At 5180C the rate of decomposition of a sample of gaseous acetaldehyde initially at a pressure of 363 Torr, was 1.00 Torr s–1 when 5% had reacted and 0.5 Torr s–1 when 33% had reacted. The order of the reaction is 0 2 3 1

Some More Questions From Chemical Kinetics Chapter

The conversion of molecules X to Y follows second order kinetics. If concentration of X is increased to three times how will it affect the rate of formation of Y?

What will be the effect of temperature on rate constant?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

At 518⁰C the rate of decomposition of a sample of gaseous acetaldehyde initially at a pressure of 363 Torr, was 1.00 Torr s^–1 when 5% had reacted and 0.5 Torr s^–1 when 33% had reacted. The order of the reaction is

0

2

3

1