Consider the following information to answer questions #16-18. Silver oxalate, A

Question

Consider the following information to answer questions #16-18. Silver oxalate, Ag2(C204), has a Ksp of 3.5 x 10-11. If you begin with a saturated aqueous solution of Ag2(C204)(s): 16. What will happen to the solubility of Ag2(C204)(s) if HNO3(aq) is added? [2 points] A. The solubility will increase B. The solubility will decrease C. The solubility will not change 17. What will happen to the solubility of Ag2(C204)(s) if NH3(aq) is added? [2 points] A. The solubility will increase B. The solubility will decrease C. The solubility will not change 18. What will happen to the solubility of Ag2(C204)(s) if Naz(C204)(aq) is added? [2 points) A. The solubility will increase B. The solubility will decrease C. The solubility will not change

Explanation / Answer

Ans 16 : A) The solubility will increase

When HNO3 is added , it releases NO3- ions in the solution , that combines with Ag+ ions in the product side and cause more dissolution of the compound , so the solublity will increase.

Ans 17 : A) The solubility will increase

When NH3 is added , it combines with oxalate ions in the products side , and cause more dissolution of the compound , hence the solublity will increase.

Ans 18 :B) The solubility will decrease

When sodium oxalate is added , it will release oxalate ions in the solution , due to which the dissolution reaction moves in backward direction , and the solubility of the compound decreases.

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