AP EAPCET 06-Jul-2022 Shift 1 Paper

Section: Chemistry

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Question : 131 of 160

Marks: +1, -0

From the following data at 25∘C, calculate the ∆rH0 for H2O(g)→2H(g)+O(g).

reaction:

∆rH0(kJ‌mol−1)

‌

1

2

H2(g)+‌

1

2

O2(g)→OH(g)

42.09

H2(g)+‌

1

2

O2(g)→H2O(g)

−242

H2(g)→2H(g)

436

O2(g)→2O(g)

496

1174kJmol−1
742kJmol−1
926kJmol−1
690kJmol−1

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