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When excess lead nitrate was added to a solution of sodium sulphate, 15.5g of PbSO4 precipitated out. What mass of Sodium sulphate was required?
Na2SO4+Pb(NO3)2 ------ PbSO4(ppt.)+ 2NaNO3
Na=23;S=32;O=16;Pb=207;N=14 |
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