Lead Ions Can Be Precipitated from Aqueous Solutions by the Addition

question 1

Multiple Choice

Lead ions can be precipitated from aqueous solutions by the addition of aqueous iodide:

Lead iodide is virtually insoluble in water so that the reaction appears to go to completion. How many milliliters of 3.550 M HI(aq) must be added to a solution containing 0.700 mol of Pb(NO₃) ₂ (aq) to completely precipitate the lead?

• A) 0.197
• B) 0.394
• C) 394
• D) 197
• E) 2.54 × 10^{- 3}

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