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When 12.0 g of carbon reacted with limit...

When 12.0 g of carbon reacted with limited quantity of oxygen, 57.5 kcal of heat was produced, calculate the number of moles of CO produced `(Delta_(f)H(CO_(2))=-94.5 cal, Delta_(f)H(CO)= -21.41kcal.`

A

0.5 mol

B

0.46 mol

C

0.64 mol

D

0.74 mol

Text Solution

Verified by Experts

The correct Answer is:
A
`12g C=1` mole, suppose CO produced `=x` moles.
Then `CO_(2)` produced `=(1-x)` mole
`:. X(-21.41)+(1-x)(-94.05)= -57.5`
This on solving gives `x=0.54` mole.
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