Question

how much heat will be required to prepare 2 kg of cac2 according to the reaction cao +3c---------->cac2 +c0 enthalpy of formation of cao=-151.6kcal/mol enthalpy of formation ofcac2=-14.2kcal/mol ​​enthalpy of formation ofcao=-26.4kcal/mol

Answer 1

Answer:

the reqired heat for preparing the 2kg of caco2 is 1732+1732= 3464 kcal

Explanation:

1 kg caco2 require 111kcal

that we can calculate from the from the enthalphy

Then heat require for making 1 Kg caco2

1000/64.10 ×111=1732

there ( 64.10) value of one mole of caco2