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Solubility product constant (K(sp)) of s...

Solubility product constant `(K_(sp))` of salts of types `MX, MX_2 and M_3X` at temperature 'T' are `4.0 xx 10^(-8), 3.2 xx 10^(-14) and 2.7 xx 10^(-15)`, respectively. Solubilities `("mol. Dm"^(-3)` of the salts at temperature 'T' are in the order

A

`MX_(1)gtMX_(2)gtM_(3)X`

B

`M_(3)XgtMX_(2)gtMX_(1)`

C

`MX_(2)gtM_(3)XgtMX_(1)`

D

`MX_(1)gtM_(3)XgtMX_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`{:(MX_(1),,MX_(2),,M_(3)X),(S_(1)^(2)=4xx10^(-8),,4S_(2)^(3)=3.2xx10^(-14),,27S_(3)^(4)=2.7xx10^(-15)),(S_(1)=2xx10^(-4),,S_(2)^(3)=8xx10^(-15),,S_(3)^(4)=10^(-16)),(,,S_(2)=2xx10^(-5),,S_(3)=10^(-4)):}`
`impliesS_(1) gt S_(3) gt S_(2) impliesMX_(1) gt M_(3)X gt MX_(2)`.
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