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ethancarter560
29.07.2019 •
Chemistry
For the reaction represented by the equation pb(no3)2 + 2ki → pbi2 + 2kno3, how many moles of lead(ii) iodide are produced from 300. g of potassium iodide and an excess of pb(no3)2? a. 11.0 mol selected: b. 1.81 mol c. 3.61 mol d. 0.904 mol
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Ответ:
Number of moles equals of potassium iodide;
The molar mass of potassium iodide is 166 g/mole
Moles = 300/166
= 1.8072moles
According to the equation;
2 moles of KI produces 1 mole of PbI2 9lead (ii) iodide
Therefore; the number of moles of lead (ii) iodide produced will be;
= 1.8072/2
= 0.9036moles
Thus the number of moles of lead (ii) iodide is 0.904 mole
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