Question

how much heat is evolved when 12 g of Co reacts with no2 .
4CO + 2NO2 ----> 4CO2 + N2
enthalpy of reaction = -1200 k J​

Answer 1

Answer:

128.57kJ

Explanation:

4 moles of CO=-1200kJ

1mole CO=12+16=28

4moles=4*28=112g

112g=-1200kJ

12g=-1200*12/112

=-128.57kJ...exothermic

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