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Consider the following chemical chnges ...

Consider the following chemical chnges
I `CaC_2(s)+2H_2O(l) rarr Ca(OH)_2(s)+C_2H_2(g)`
II `2SO_2(g)+O_2(g) rarr 2SO_3(g)`
III`2Fe(s)+3H_2O(g) rarr Fe_2O_3+3H_2(g)`
Work is done by the system in the case of

A

I and II

B

II and III

C

only I

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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