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The standard heat of formation of carbon...

The standard heat of formation of carbon disulphide (l) given that standard heat of combustion of carbon (s), sulphur (s) and carbon disulphide (l) are -393.3, -293.72 and `-1108.76 KJ mol^(-1)` respectively is

A

`-12.502 KJ. Mol^(-1)`

B

`+128.02 KJ.mol^(-1)`

C

`-128.02 KJ.mol^(-1)`

D

`+12.802 KJ.mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`C+S_(2) rarr CS_(2)`
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Calculate the standard heat of formation of carbon disulphide (l). Given that the standard heats of combustion of carbon (s), sulphur (s) and carbon disulphide (l) are -393.3, -293.72 and -1108.76 kJ mol^(-1) respectively.

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NARAYNA-THERMODYNAMICS-Level -I (H.W)
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  9. H(2)(g) + Cl(2) rarr 2HCl (g), Delta H = -44K.cals 2 Na(s)+2HCl (g)rar...

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  10. If S(g)+e^(-) rarr S^(1-)(g), Delta H = -207.6 KJ S(g) + 2e^(-) rarr...

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