Question

If NaOH is added to an aqueous solution of zinc ions a white precipitate appears and on adding excess of NaOH, the precipitate dissolves. In this solution, zinc exists in the
A. Cationic part
B. Anionic part
C. Both in the cationic and anionic parts
D. there is no zinc ion in the solution

Answer 1

`Zn^(2+)+2NaOH to Zn(OH)_(2) +2Na^(+)`
`Zn(OH)_(2) +2NaOH to Na_(2)ZnO_(2)+2H_(2)O`