Arrange in increasing order of solubility of AgBr in the given solutions. (i) 0.1MNH3 (ii) 0.1MAgNO3 (iii) 0.2MNaBr (iv) Pure water
A
(iii)<(ii)<(iv)<(i)
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B
(iii)<(ii)<(i)<(iv)
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C
(iii)<(ii)=(i)<(iv)
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D
(i)<(iii)<(iv)<(ii)
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Solution
The correct option is A(iii)<(ii)<(iv)<(i) Order of solubility : Complex formation > Pure water > Common ion effect. AgBr forms complex [Ag(NH3)2]+ in NH3 so solubility is maximum in NH3(aq). In AgNO3andNaBr, there are common ions with AgBr. So their solubility will be less.