Indentify the correct order of solubilit...

Indentify the correct order of solubility in aqueous medium

A

`ZnSgtNa_(2)SgtCuS`

B

`Na_(2)SgtCuSgtZnS`

C

`Na_(2)SgtZnSgtCuS`

D

`CuSgtZnSgtNa_(2)S`

Text Solution

Verified by Experts

The correct Answer is:

C

All alkali metal (group 1A or 1) compounds are soluble. In salt analysis, the sulphides of group 2 `(CuS, CdS, SnS, Bi_(2)S_(3))` have low solubility product relative to the sulphides of group 3 `(CoS, FeS, MnS, Nis, ZnS)`. If two compounds (such as CuS and ZnS) have the same ion ratio, the one with larger `K_(sp)` will have the higher molar solubility. Thus, ZnS is more soluble than CuS.

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Identify the correct order solubility in apocous medium

A

`Na_(2)S gt CuS gt ZnS`

B

`Na_(2)S gt ZuS gt CuS`

C

`ZnS gt Na_(2)S gt CuS `

D

`Na_(2)S gt CuS gt ZnS`

Select the correct order of solubility in water.

A

`CaCO_3 gt KHCO_3 gt NaHCO_3`

B

`KHCO_3 gt NaHCO_3 gt CaCO_3`

C

`NaHCO_3 gt KHCO_3 gt CaCO_3`

D

`CaCO_3 gt NaHCO_3 gt KHCO_3`

Identify the correct order of hydration in the aqueous medium:

A

`LiNO_(3) lt NaNO_(3) lt KNO_(3)`

B

`LiNO_(3) lt NaNO_(3) lt LiNO_(3)`

C

`KNO_(3) lt NaNO_(3) lt LiNO_(3)`

D

`NaNO_(3) lt KNO_(3) lt LiNO_(3)`

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