A metal M and its compound can give the following observable changes in a consequence of reactions<b — d and f Block Elements Chemistry Question
Question
A metal M and its compound can give the following observable changes in a consequence of reactions<br>M $\xrightarrow{\text{dilute HNO}_3}$ Colourless solutions $\xrightarrow{\text{aqueous NaOH}}$ White precipitate $\xrightarrow{\text{excess NaOH(aq.)}}$ Colourless solution $\xrightarrow{\text{H}_2\text{S}}$ White precipitate
Answer: C
💡 Solution & Explanation
(c) Zn $\xrightarrow{\text{dil.HNO}_3}$ Zn(NO3)2 (M, Colourless Solution) $\xrightarrow{\text{Aq. NaOH}}$ Zn(OH)2 (White ppt.) $\xrightarrow{\text{Excess NaOH}}$ Na2[Zn(OH)4] (Soluble) $\xrightarrow{\text{H}_2\text{S}}$ ZnS (White ppt.)
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