Molarity Molality Mole Fraction

Suppose a hydrochloric acid solution contains 36 g of HCl and 64 g of H₂O.what is the mole fraction of HCl?

• 0.78

• 0.99

• 0.22

• 3.6

Determine the mole fraction of SOLUTE in a solution with 2 moles of acetic acid (C2H4O2 / vinegar) and 2 moles of water.

• .5

• .25

• 1

• .2

Calculate the mole fraction of benzene (C6H6) in a solution of 46.8 g benzene and 36.8 g of toluene (C7H8).

• 0.4

• 0.6

• 0.7

• 0.5

Determine the mole fraction of SOLUTE in a solution with 2 moles of acetic acid C₂H₄O₂ and 2 moles of water.

• .5

• .25

• 1

• .2

What is the mole fraction of 29.22 g of NaCl (58.44 g/mol) in 36.04 g of H₂O (18.02 g/mol)?

• 0.8108

• 0.4477

• 0.2000

• 0.2500

What is the molarity of a solution formed by dissolving 0.45 mol of potassium hydroxide (KOH) in enough water to form 0.674 L of solution? Use the appropriate formula to solve for the missing variable.

• 0.30 M

• 0.67 M

• 1.49 M

How many moles of sodium nitrate are there in 0.610 L of a 0.7 M solution of sodium nitrate? Use the appropriate formula to solve for the missing variable.

• 0.43 mol

• 0.87 mol

• 1.15 mol

What is the molarity of a solution containing 5 moles of solute in 2 liters of solution?

• 2.5 M

• 5 M

• 10 M

• 0.4 M

Calculate the molality of a solution with 10 grams of NaCl (molar mass = 58.44 g/mol) dissolved in 500 grams of water.

• 0.342 m

• 0.684 m

• 0.171 m

• 0.500 m

If a solution is made by dissolving 1 mole of glucose in 1 kg of water, what is the molality of the solution?

• 1 m

• 2 m

• 0.5 m

• 0.1 m