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Grade 10Inorganic Chemistry

Write down the balanced equations for the reactions when:
(i) Calcum phosphate is heated with a mixture of sand and carbon ;
(ii) An alkaline solution of potassium ferricyanide is reacted with hydrogen peroxide.
(iii) Carbon dioxide is passed through a concentrated aqueous solution of sodium chloride saturated with ammonia.
(iv) Potassium ferricyanide reacts with hydrogen peroxide in basic solution.
(v) Carbon dioxide is passed through a suspension of lime stone in water.

Profile image of Hrishant Goswami
12 Years agoGrade 10
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1 Answer

Profile image of Jitender Pal
12 Years ago
Hello Student,
Please find the answer to your question
(i) 2Ca3(PO4)2 + 6SiO2 + 10C \overset{\Delta }{\rightarrow}6CaSiO3 + 10CO + P4
This is the electrothermal process to extract phosphorus from phosphorite or bone ash [Ca3(PO4)2].
(ii) Ferricyanide is oxidized to ferrocyanide on treatment with alkali
2K3[Fe(CN)6] + H2O2 + 2KOH → 2K4[Fe(CN)6] + 2H2O + O2
(iii) NaCI + NH4OH + CO2 → NH4CI + NaHCO3
(iv) 2K3[Fe(CN)6] + H2O2 + 2KOH → 2K4[Fe(CN)6] + 2H2O + O2
(v) CaCO3 + CO2 + H2O → Ca(HCO3)2
Calcium bicarbonate
NOTE : Suspension oif lime stone is CaCO3.

Thanks
jitender
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