Question

Calculate ÎGârxn for the following reaction:______
4CO(g)+2NO2(g)â4CO2(g)+N2(g).
Use the following reactions and given ÎGârxn values:______
A. 2NO(g)+O2(g)â2NO2(g), ÎGârxn= - 72.6 kJ
B. 2CO(g)+O2(g)â2CO2(g), ÎGârxn= - 514.4 kJ
C. 12O2(g)+12N2(g)âNO(g), ÎGârxn= 87.6 kJ

Answer 1

Answer:

-1043,8 KJ

Explanation:

Hello!

It is necessary to accommodate the reactions to get the reaction of my interest.

Reaction A reverses what modifies its energy in its sign (+72.6 KJ).

Reaction B doubles, which also doubles its energy (-514.4 KJ x 2).

Reaction C reverses what modifies its energy in its sign (-87.6 KJ).

By sum of the energies I get the energy of the global reaction.  

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