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Chemistry

Give balanced equations for the following conversions.

(a) Sodium zincate from zinc

(b) Sodium plumbite from lead

(c) Sodium aluminate from aluminium.

Hydrogen

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Answer

(a) Zn+2NaOH⟶Na2ZnO2[sodium zincate]+H2[g]\text{(a) } \text{Zn} + 2\text{NaOH} \longrightarrow \underset{\text{[sodium zincate]}}{\text{Na}2\text{ZnO}2} + \text{H}_2 \text{[g]}

(b) Pb+2NaOH⟶Na2PbO2[sodium plumbite]+H2[g]\text{(b) } \text{Pb} + 2\text{NaOH} \longrightarrow \underset{\text{[sodium plumbite]}}{\text{Na}2\text{PbO}2} + \text{H}_2 \text{[g]}

(c) 2Al+2NaOH+2H2O⟶2NaAlO2[sodium aluminate]+H2[g]\text{(c) } 2\text{Al} + 2\text{NaOH} + 2\text{H}2\text{O}\longrightarrow \underset{\text{[sodium aluminate]}}{2\text{NaAlO}2} + \text{H}_2 \text{[g]}

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