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Determine which of the following reactio...

Determine which of the following reaction at constant pressure represent systems that do work on the surrounding environment
(I) `CaO (s) + CO_(2) (g) rarr CaCO_(3) (s)`
(II) `NH_(4)Cl (s) rarr NH_(3) (g) + HCl (g)`
(III) `2NH_(3) (g) rarr N_(2) (g) + 3H_(2) (g)`

A

I

B

III

C

II & III

D

I and II

Text Solution

Verified by Experts

The correct Answer is:
C
I. `Delta n - ve`, II `Delta n + ve`, III `Delta n = +ve`
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For the reaction : CaCO_(3) (s) hArr CaO (s) + CO_(2) (g)

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