Author Question: A solution is prepared from 3.5 102mL of 3.2 M Pb(NO3)2 and 2.0102 mL of 0.020 M NaCl. Given that ... (Read 56 times)

abarnes · **on:** Mar 21, 2021

Question 1

A solution is prepared by adding excess PbI₂(K_sp= 1.42 × 10^–8) to water. What is the [I^–] at equilibrium?

◦ 1.53 × 10^–3 mol/L
◦ 7.10 × 10^–9 mol/L
◦ 1.19 × 10^–4 mol/L
◦ 8.95 × 10^–26 mol/L
◦ 3.05 × 10^–3 mol/L

Question 2

A solution is prepared from 3.5 × 10²mL of 3.2 M Pb(NO₃)₂ and 2.0×10² mL of 0.020 M NaCl. Given that K_sp for lead chloride is 1.6×10^-5, will precipitation occur?

Reference: Ref 16-1

◦ Yes.
◦ No.
◦ Maybe, it depends on the temperature.
◦ Maybe, it depends on the limiting reagent concentration.
◦ None of these are correct.

BAOCHAU2803 · **Reply #1 on:** Mar 21, 2021

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