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One mole of methanol, when burnt in oxyg...

One mole of methanol, when burnt in oxygen, gives out 723 kJ `mol^-1` heat. If one mole of oxygen is used, what will be the amount of heat evolved ?

A

723kJ

B

964kJ

C

482kJ

D

241kJ.

Text Solution

Verified by Experts

The correct Answer is:
C
`CH_3OH+ 3/2 O_2rarr CO_2 + 2H_2O, Delta H =- 723 kJ `
With 1 mol of `O_2 ` Heat evolved `=2/3 xx 723 = 482 kJ.`
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