Question

Statement 1:$Na_{2}ZnO_{2}$ is water soluble whereas $Zn(OH)_{2}$ is insoluble
Statement 2: Addition of $NaOH$ solution to $ZnCl_{2}$ gives white ppt. which dissolves on further addition of $NaOH$ due to the formation of complex cation

• A. If both Statement 1 and Statement 2 are true and the statement 2 is the correct explanation of the statement 1
• B. Ifboth Statement 1 and Statement 2 are true but statement 2 is not the correct explanation of the statement 1
• C. If Statement 1 is true but Statement 2 is false
• D. If Statement 1 is false but Statement 2 is true

Answer 1

Answer: (C)

$ZnCl_{2}+2NaOH \to Zn(OH)_{2}+2NaCl$
$Zn(OH)_{2}+2NaOH \to Na_{2}[ZnO_{2}+2H_{2}O [Zn_{2}O]^{2-}$ is a complex anion