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O + 2e^(-) to O^(-) , DeltaH = 639 kJ/mo...

`O + 2e^(-) to O^(-) , DeltaH = 639 `kJ/mole
`O + e^(-)  to O^(-) DeltaH o= -141 `kJ/mole
`O^(-) + e^(-) to O^(-) , DeltaH = x ` kJ/mole
What is the value of x ? 

A

`– 780 `

B

`+ 780 `

C

`– 498 `

D

`+ 498`

Text Solution

Verified by Experts

The correct Answer is:
B
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