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Given the following entropy vlaues (in J...

Given the following entropy vlaues (in `JK^(-1)mol^(-1)`) at 298 K ad 1 atm:
`H_(2)(g):130.6`, `HCl(g):186.7`, `Cl_(2)(g):223.0`
, `Cl_(2)(g)to2HCl(g)` is

A

`+540.3`

B

`727.0`

C

`-166.9`

D

19.8

Text Solution

Verified by Experts

The correct Answer is:
D
(d) `DeltaS^(@)=2S_(HCl)^(@)-(S_(H_(2))^(@)+S_(Cl_(2))^(@))`
`=2xx186.7-(130.6+223.0)`
`=19.8KJ^(-1)mol^(-1)`
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