Post Utme Esut 2020 Chemistry Question 21

Practice objective / multiple choice question 21 from the 2020 Post Utme Esut Chemistry examination.

Post Utme Esut 2020 Chemistry Objective / Multiple Choice

Question 21 POST_UTME_ESUT • 2020 • CHEMISTRY • objective

Calculate the s\tandard enthalpy change for the reaction: 2Ag+(aq) + Cr2O72-(aq) → 2Ag(s) + 2Cr3+(aq) + 7H2O(l). Given that ΔH°\( Ag+\( aq \ \) → Ag(s)) = 105.9 kJ/mol and ΔH°\( Cr2O72-\( aq \ \) → Cr3+(aq)) = -1364.4 kJ/mol.

Correct Answer A. -1200 kJ/mol

B. -1500 kJ/mol

C. -1800 kJ/mol

D. -2000 kJ/mol

Correct Answer

Correct Option:

-1200 kJ/mol

This is Post Utme Esut 2020 Chemistry Question 21. It is one of the objective questions from the 2020 Post Utme Esut Chemistry examination.

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