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In a reaction, CO(2(g)) +H(2(g)) rarr CO...

In a reaction, `CO_(2(g)) +H_(2(g)) rarr CO_((g)) +H_(2)O_((g)), Delta H=+2.8 kJ` at a constant pressure. The heat ofreactton at constant volume is

A

5.6 kJ

B

2.8 kJ

C

-5.6 kJ

D

-2.8 kJ

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta H= Delta U + Delta nRT`
`Delta U = Delta H-DeltanRT( Delta n=0" for the reaction")`
`Delta U = Delta H`
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