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Author Question: Solid potassium chromate (K2CrO4) is slowly added to a solution containing 0.50 mol L-1 AgNO3 and ... (Read 229 times)

ETearle

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Question 1

What is the molar solubility of AgCl in 0.10 mol L-1 NaCN if the colourless complex ion Ag(CN)2- forms? Ksp for AgCl is 1.8 × 10-10 and Kf for Ag(CN)2- is 1.0 × 1021.
◦ 0.050 mol L-1
◦ 0.40 mol L-1
◦ 0.10 mol L-1
◦ 0.20 mol L-1

Question 2

Solid potassium chromate (K2CrO4) is slowly added to a solution containing 0.50 mol L-1 AgNO3 and 0.50 mol L-1 Ba(NO3)2. What is the Ag+ concentration when BaCrO4 just starts to precipitate? The Ksp for Ag2CrO4 and BaCrO4 are 1.1 × 10-12 and respectively.
◦ 6.8 × 10-2 mol L-1
◦ 6.5 × 10-5 mol L-1
◦ 1.3 × 10-4 mol L-1
◦ 3.2 × 10-4 mol L-1


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Marked as best answer by ETearle on Nov 18, 2019

shaikhs

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