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d0a4yYilAshwe
d0a4yYilAshwe d0a4yYilAshwe
  • 20-05-2016
  • Chemistry
Answered

Determine how many grams of KI are required to produce 1.2g of Pbl2-

A0.43g
B0.86g
C1.67g
D3.33g

Verified Answer :

Willchemistry
Willchemistry Willchemistry
  • 22-05-2016

Molar mass KI = 166.0028 g/mol   and Pbl₂ = 461.0089 g/mol

2 Kl + Pb(NO₃)₂ ------> 2 KNO₃ + Pbl₂

2 x 166.0028 g ---------> 461.0089 g
           ? g KI -------------> 1.2 g

Mass KI = 1.2 x 2 x 166.0028 / 461.0089

Mass KI = 398.40672 / 461.0089

Mass KI = 0.86 g

Answer B

hope this helps!

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