Question

Enthalpy of combustion of carbon dioxide is -393.5 KJ mol to the power -1 , Calculate the heat released upon formation of 35.2 g of CO2 from carbon to oxygen gas. ​

Answer 1

$\huge\mathfrak{Solution}$

The combustion equation is :

C + O2 - CO2 (44g)

• Heat released in the formation of 44g of CO2 = -393.5 kJ

• Heat released in the formation of 35.2 g of CO2 =

= -393.5 (kJ) * 35.2 (g) / 44(g)

= -314.8 kJ

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