Reference no: EM13778132
1. A chemistry lab experiment requires 25.2 g of silver nitrate. How many grams of a 15.5% solution of silver nitrate should be used?
2. Calculate the molarity of the following:
a) 0.25 mol of solute in 75.0 mL of solution.
b) 275 g C6H12O6 in 775 mL of solution
3. How many milliliters of 0.75M H3PO4 will contain the following?
a) 0.15 mol H3PO4
b) 35.5 g H3PO4
4. Calculate the volume of concentrated reagent 18M H2SO4 required to prepare 225 ml of 2.0M solution.
5. Use the equation to calculate the following:
2KMnO4(aq.) + 16 HCl (aq) à 2MnCl2 (aq) + 5 Cl2 (g) +8 H2O (l) + 2KCl (aq)
a) the volume of 2.50M HCl needed to produce 125 mL of 0.525 M KCl
b) the molarity (M) of HCl solution when 22.20 mL react with 15.60 mL of 0.250 M KMnO4
c) the liters of Cl2 gas at STP produced by the reaction of125mL of 2.5M HCl
6. A solution contains 100.0 g of ethylene glycol (C2H6O2) in 150.0 g of water. Calculate the following :
a) its molality,
b) freezing point and
c) boiling point
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