Chemistry, asked by Abid5438, 11 months ago

The thermal decomposition of dimethyl ethr as measured by finding

Answers

Answered by AnmolRaii
0

Thermal decomposition, or thermolysis, is a chemical decomposition caused by heat. The decomposition temperature of a substance is the temperature at which the substance chemically decomposes. The reaction is usually endothermic as heat is required to break chemical bonds in the compound undergoing decomposition.

Answered by Anonymous
7

Answer:

1 Answer

The unit of rate constant indicates it is first order reaction.

The initial pressure of ether is a=312 mm\ Hga=312mm Hg.

After 390 s, the pressure of ether is a-xa−x.

Total pressure is a-x+x+x+x=a+2xa−x+x+x+x=a+2x.

312+2x=312+96312+2x=312+96

x=49x=49

Thus, the pressure of ether is a-x=312-49=263a−x=312−49=263.

The expression for the rate constant of first order reaction is k=\dfrac {2.303} {t}log \dfrac {a} {a-x}=\dfrac {2.303} {390}log \dfrac {312} {263}=0.000428\ sec^{-1}k=

t

2.303

log

a−x

a

=

390

2.303

log

263

312

=0.000428 sec

−1

.

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