Exercise $4$

Calcium carbide $(Ca{C}_2)$ is a fuel in a basic oxygen furnace. The cost to raise the

temperature of $1\mathrm{.}3kg$ scrap to $1680C$ is $R2\mathrm{.}30.$ The heat required to do this is

$1557760$J$.$ Calculate the total cost per $1850kg$ of $Ca{C}_2$ when all the $Ca{C}_2$ is utilised

to produce $C{O}_2.$

Given:

$H$ at $298KCa{C}_2=-68990\frac{J}{m}ol,$CaO$=-645240\frac{J}{m}ol,C{O}_2=-120640\frac{J}{m}ol$

Rule: Students must solve this problem under your supervision