23. Use the standard enthalpies of formation to answer the questions on this page. K2O2(s): ΔH○f...

23. Use the standard enthalpies of formation to answer the questions on this page.

K2O2(s): ΔH○f = –496 kJ/mol CO(g): ΔH○f = –111 kJ/mol CO2(g): ΔH○f = –394 kJ/mol

a. Write the reactions of formation for the three compounds above.

RXN (1) - Formation of K2O2
RXN (2) - Formation of CO
RXN (3) - Formation of CO2

b. What combination of Reactions 1-3 gives the following “reaction X”?

K2O2(s) + 2 CO(g) → 2 K(s) + 2 CO2
RXN X =

c. Calculate ΔH○rxn for reaction X.

d. What would be the value of ΔH○rxn for: K2O(s) + CO2(g) → K2O2(s) + CO(g), given that ΔH○rxn for K2O(s) + CO(g) → 2 K(s) + CO2(g) is +80 kJ/mol?

Solutions

Expert Solution

queen_honey_blossom answered 1 year ago

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