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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEC
Chapter: Thermodynamics (C)

Olympiad workbook · NSEC · Thermodynamics (C)

For the reaction 4 NO_2(~g)+O_2(~g) arrow 2 ~N_2 O_5(~g), Δ H_...

For the reaction

4 \mathrm{NO}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{~N}_2 \mathrm{O}_5(\mathrm{~g}), \Delta \mathrm{H}_{\text {reaction }}=-112 \mathrm{~kJ}

. If the

\mathrm{N}_2 \mathrm{O}_5

is assumed to be formed in the reaction as a solid,

\Delta \mathrm{H}_{\text {reaction }}

will be \left(\Delta \mathrm{H}_{\text {sublimation }}\right.

of

\mathrm{N}_2 \mathrm{O}_5

is

54 \mathrm{~kJ} \mathrm{~mol}^{-1}

)

Options

A $-220 \mathrm{~kJ}$
B $-4 \mathrm{~kJ}$
C $-166 \mathrm{~kJ}$
D $-332 \mathrm{~kJ}$

Correct answer

A. $-220 \mathrm{~kJ}$

Step-by-step solution

No Solution

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