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If ΔH1=900kJ

ΔH2=650kJ

Then find ΔHeg of X.

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a
250kJ
b
1550kJ
c
250kJ
d
+1550kJ

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detailed solution

Correct option is A

Given,

ΔH1=900kJ

ΔH2=650kJ

The change in the enthalpy is

ΔH=ΔH2ΔH1

.ΔH=900-650

ΔH=250 kJ

Hence, ΔHeg of Xis 250 kJ.

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