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3 years ago

12. Which one of the following is not true about the reaction of: CH3-

Chemistry

1 answer:

weqwewe [10]3 years ago

7 0

Explanation:

CH₃CH₃ + Cl₂ → CH₃CH₂Cl + HCl

This reaction take place in the presence of light/UV rays. (i.e, photochemical reaction)
It's a Chlorination reaction because here there's addition of chlorine.
It's a substitution reaction because Cl substituted H from place and attach there.

Option which is NOT correct is

Option A (It's not an elimination reaction)

Therefore,

Option A is correct✔

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tatyana61 [14]

Answer: The equilibrium concentration of $PCl_5$ is 1.285 M.

Explanation:

The chemical equation for the decomposition of phosphorus pentachloride follows:

$PCl_5(g)\rightleftharpoons PCl_3(g)+Cl_2(g)$

The expression for equilibrium constant is given as:

$K_c=\frac{[PCl_3][Cl_2]}{[PCl_5]}$

We are given:

$K_c=0.042$

$[PCl_3]=0.18M$

$[Cl_2]=0.30M$

The concentration of solid substances are taken to be 1. Thus, they do not appear in the equilibrium constant expression.

Putting values in above equation, we get:

$0.042=\frac{0.18\times 0.30}{[PCl_5]}$

$[PCl_5]=1.285$

Hence, the equilibrium concentration of $PCl_5$ is 1.285 M.

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