When a small piece of zinc are placed in a test tube containing phosphoric acid ,zinc phosphate is formed with the evolution of a colourless gas X
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it is the hydrogen gas
3Zn (s) + 2H3PO4(aq) = Zn3 (PO4)2(aq) + 3H2(g)
3Zn (s) + 2H3PO4(aq) = Zn3 (PO4)2(aq) + 3H2(g)
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In this reaction hydrogen gas is liberated
as zinc displaces hydrogen from phosphoric acid
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as zinc displaces hydrogen from phosphoric acid
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