Jump to... Brendan Tokarski earning /23/2018 09:00 AM 11.8/20 3/20/2018 01:20 AM

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Jump to... Brendan Tokarski earning /23/2018 09:00 AM 11.8/20 3/20/2018 01:20 AM Gra -Print Calculator Periodic Table stion 10 of 10 Map Sapling Learmning Write the balanced equation for the reaction of aqueous Pb(CIO3)2 with aqueous Nal. Include phases. What mass of precipitate will form if 1.50 L of highly concentrated Pb(CIO3)2 is mixed with 0.650 L of 0.200 M Nal? Assume the reaction goes to completion. Number Previous Give Up & View Solution check Answer Next Exit about us careers privacy policy terms of use contact us help

Explanation / Answer

1.

The balanced equation,

Pb(ClO3)2 (aq.) + 2 NaI (aq.) -----------> PbI2 (s) + 2 NaClO3 (aq.)

2.

Moles of NaI = 0.200 * 0.650 = 0.130 mol

From the balanced equation,

2 mol of NaI forms 1 mol of PbI2

Then, 0.130 mol of NaI forms 1 * 0.130 / 2 = 0.0650 mol of PbI2

Mass of PbI2 = moles * molar mass = 0.0650 * 461.0 = 30.0 g.

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