pBlock ElementsII - Result Question 107
####104. Write down the balanced equation for the reactions when
(i) calcium phosphate is heated with a mixture of sand and carbon.
(ii) ammonium sulphate is heated with a mixture of nitric oxide and nitrogen dioxide.
(1985, 2M)
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Solution:
- (i) $2 Ca _3\left(PO _4\right) _2+6 SiO _2+10 C \stackrel{\Delta}{\longrightarrow} 6 CaSiO _3$
$$ +10 CO+P _4 $$
(white)
(ii) $\left(NH _4\right) _2 SO _4+NO+NO _2 \longrightarrow 2 N _2+3 H _2 O+H _2 SO _4$
