QUESTION $1$

$1\mathrm{.}1$ From the equation: $[S]+(CaO)+1\frac{1}{2}[Si]=(CaS)+$

$\frac{1}{2}Si{O}_2$

$1\mathrm{.}1\mathrm{.}1$ Write an expression for equilibrium constant $K$

$1\mathrm{.}1\mathrm{.}2$ Write an expression for silicon in metal in term of $K$

$1\mathrm{.}1\mathrm{.}3$ Using your answer in $1\mathrm{.}1\mathrm{.}2,$ explain the silicon and

Sulphur content in metal

$1\mathrm{.}1\mathrm{.}4$ How can optimum levels of silicon $(1\%)$ be achieved

in the blast furnace?