Answer to Question #232879 in General Chemistry for john

Question

Calcium carbide, CaC₂, is manufactured by reducing lime with carbon at high temperature. (The carbide is used in turn to make acetylene, an industrially important organic chemical.)

CaO(s)+3C(s)→CaC₂(s)+CO(g)

CaO(s)+3C(s)→CaC₂(s)+CO(g)   ΔH=464.8kJ

ΔH=464.8kJ 

Calculate the quantity of energy, in MJ, transferred when a metric ton(1000 kg) of CaC₂(s) is manufactured.

Ca = 40 g/mol

C = 12 g/mol

O = 16 g/mol

Answer 1

464.8 ×4.81 × 56/12

= 10433/1000

= 10.433Mj