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1. Is it possible to keep copper sulphate solution in zinc pot? Why? 2. Assign oxidation numbers of the underlined elements. (i) NaH2 PO4 (ii) NaHSO4 |
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Answer» 1. No. Zn being more reactive will displace Cu from CuSO4 . Thus Cu will be deposited on the vessel. 2. (i) NaH2 PO4 +1 +(+1 × 2) + x +(-2 × 4) = 0 1 + 2 + x – 8 = 0 x – 5 = 0 x = +5 (ii) NaHSO4 +1 + 1 + x +(-2 × 4) = 0 +1 + 1 + x – 8 = 0 x – 6 = 0 x = +6 |
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