The heat of combustion of carbon is `-393.5kJ//mol.` The heat released upon the formation of 35.2 g of `CO_(2)` from carbon and oxygen gas is

Question

The heat of combustion of carbon is `-393.5kJ//mol.` The heat released upon the formation of 35.2 g of `CO_(2)` from carbon and oxygen gas is

The heat of combustion of carbon is `-393.5kJ//mol.` The heat released upon the formation of 35.2 g of `CO_(2)` from carbon and oxygen gas is
A. `+135` kJ
B. `-31.5` kJ
C. `-315` kJ
D. `+31.5` kJ

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
`C+O_(2)to CO_(2)`
`DeltaH=-393.5kJ`
`therefore` Heat released upon the formation of 1 g of
`CO_(2)=(-393.5)/(44)kJ`
`therefore` Heat released upon the formation of 1 g of
`CO_(2)=(-393.5)/(44)xx35.2`
`~~-315kJ`

4 views Answered 2023-02-05 15:29