Q11. What do you observe when sodium hydroxide solution is added to zinc sulphate solution in excess?

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Solution

When sodium hydroxide solution is added to zinc sulphate solution
A white ppt is produced which dissolves in excess of sodium hydroxide.
The reaction when sodium hydroxide is added to zinc sulphate solution is:
$Z n S O_{4} (s) + 2 N a O H (l) \to \underset{Z i n c H y d r o x i d e (W h i t e p p t)}{Z n {(O H)}_{2} (s) ↓} + N a_{2} S O_{4} (s) Z n {(O H)}_{2} (s) + 2 N a O H (l) \to \underset{S o d i u m Z i n c a t e (S o l u b l e), C o l o u r l e s s s o l u t i o n}{N a_{2} Z n O_{2} (s)} + 2 H_{2} O (l)$

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What do you observe when sodium hydroxide solution is added to zinc sulphate solution in excess?

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