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How many grams of solid NaCN have to be added to 1.4 L of water to dissolve 0.11 mol of
Fe(OH)3in the form of Fe(CN)63−? (For simplicity, ignore the reaction of CN−ion with
water.)
Solution
3 moles of NaCN dissolve 1 mole of Fe(OH)3
3*.11 = .33 moles NaCN will dissolve .11 mole of Fe(OH)3
wt reqd. = 0.33*(23+12+14)
w = 16.17 g

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How many grams of solid NaCN have to be added to 1.4 L of water to d.pdf

  • 1. How many grams of solid NaCN have to be added to 1.4 L of water to dissolve 0.11 mol of Fe(OH)3in the form of Fe(CN)63−? (For simplicity, ignore the reaction of CN−ion with water.) Solution 3 moles of NaCN dissolve 1 mole of Fe(OH)3 3*.11 = .33 moles NaCN will dissolve .11 mole of Fe(OH)3 wt reqd. = 0.33*(23+12+14) w = 16.17 g