Assertion :When H_(2)S is passedthrough a solution of CuSO_(4) noprecipitate of CuS is abtain until the solutionis acidifiedwith HCI Reasion: The solutionproducts constant of CuS is not so high as to require a high concentration of S^(2-) for theprecipitateof CuS

Assertion :When H_(2)S is passedthrough a solution of CuSO_(4) nopreci

1.	Assertion :When H_(2)S is passedthrough a solution of CuSO_(4) noprecipitate of CuS is abtain until the solutionis acidifiedwith HCI Reasion: The solutionproducts constant of CuS is not so high as to require a high concentration of S^(2-) for theprecipitateof CuS
Answer» If both (A) and (B) are correct and (R ) is the correct explqanation of (A) If both (A) and (B) are correct but (R ) is not the correct explqanation of (A) If (A) is correct ,but (R ) is incorrect If (A) is incorrect ,but (R ) is correct Solution :It is true thatprecipitateof `CUS`does not REQUIR a high CONCENTRATION of `S^(2-)` ions But thisdoes notmeanthat `CuS` will notprecipitate with a higherconcentrationof `S^(2-)` In fact ,the precipitatewill be faciliated by a highconcentration of `S^(2-)` ,i.e. when thesolutionis not acidified so , (A) is false ,but (R ) is true