alleryWhat property lets a hydroxide dissolve in excess NaOH?
AThe precipitate is a sulfate
BThe cation is a noble gas
CThe hydroxide is amphoteric
DThe alkali is neutral
Answer & Solution
Correct answer: C. The hydroxide is amphoteric
Zinc hydroxide is amphoteric: it reacts with both acid and alkali, so excess sodium hydroxide dissolves it.
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