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In order to decompose 9 grams of water 1...

In order to decompose 9 grams of water 142.5 KJ heat is required. Hence the enthalpy of formation of water is

A

`+142.5 KJ`

B

`-142.5 KJ`

C

`+285 KJ`

D

`-285 KJ`

Text Solution

Verified by Experts

The correct Answer is:
D
`9 gm rarr 142.5 KJ`
`18 gm rarr` ?
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