Srihari has a torch with him and 2 new batteries. However, the torch requires 3 batteries to work. Is there any way Srihari can get the torch to glow?

Question

Chemistry: Srihari has a torch with him and 2 new batteries. However, the torch requires 3 batteries to work. Is there any way Srihari can get the torch to glow?

brainlazslxmfsjakzfn · Accepted Answer

Here we have to give a synthetic route to get phosphorous from its compound.

The reaction is:

2Ca₃(PO₄)₂ + 6SiO₂ + 10C → P₄ + 6CaSiO₃ + 10CO

Phosphorous occurs in nature as phosphorite [Ca₃(PO₄)₂], fluorapatite [3Ca₃(PO₄)₂.CaF₂].

The phosphorous is obtained by heating a mixture of phosphorite [Ca₃(PO₄)₂], silica [SiO₂] and coke (C) in an electric arc furnace at 1500⁰C. Phosphorous (P₄) is vaporize and leaves the furnace through an exit at the top.

It is condensed by cooling in cold water and cast into sticks and stored under water. The fusible calcium silicate (CaSiO₃) is removed as side product.

The reaction is:

2Ca₃(PO₄)₂ + 6SiO₂ + 10C → P₄ + 6CaSiO₃ + 10CO

Srihari has a torch with him and 2 new batteries. However, the torch requires 3

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