Post Utme Igbinedion University 2023 Chemistry Question 13

Practice objective / multiple choice question 13 from the 2023 Post Utme Igbinedion University Chemistry examination.

Post Utme Igbinedion University 2023 Chemistry Objective / Multiple Choice
Question 13 POST_UTME_IGBINEDION_UNIVERSITY • 2023 • CHEMISTRY • objective

The s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol. Calculate the s\tandard enthalpy of formation of H2O(l) given that the s\tandard enthalpy of formation of H2(g) is 0 kJ/mol and the s\tandard enthalpy of formation of O2(g) is 0 kJ/mol.

Answer Options

A. \( Delta H_f^{circ} \( H_2O \ \) = Delta H_f^{circ} \( CO_2 \) + Delta H_f^{circ} \( H_2 \) + Delta H_f^{circ} \( O_2 \) )
Correct Answer B. \( Delta H_f^{circ} \( H_2O \ \) = Delta H_f^{circ} \( CO_2 \) - Delta H_f^{circ} \( H_2 \) - Delta H_f^{circ} \( O_2 \) )
C. \( Delta H_f^{circ} \( H_2O \ \) = Delta H_f^{circ} \( CO_2 \) + Delta H_f^{circ} \( H_2 \) - Delta H_f^{circ} \( O_2 \) )
D. \( Delta H_f^{circ} \( H_2O \ \) = Delta H_f^{circ} \( CO_2 \) - Delta H_f^{circ} \( H_2 \) + Delta H_f^{circ} \( O_2 \) )
Correct Answer
B
Correct Option:
\( Delta H_f^{circ} \( H_2O \ \) = Delta H_f^{circ} \( CO_2 \) - Delta H_f^{circ} \( H_2 \) - Delta H_f^{circ} \( O_2 \) )

About This Question

This is Post Utme Igbinedion University 2023 Chemistry Question 13. It is one of the objective questions from the 2023 Post Utme Igbinedion University Chemistry examination.

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