Molarity Review

What volume is needed to make a 2.45 M solution of KCl using 0.50 mol of KCl?

• 4.9 L

• 0.20 L

• 1.2 L

How many moles of NaCl are needed to make 5.25 L of a 0.25 M solution?

• 1.3 mol

• 21 mol

• 0.048 mol

How many grams of KCl would be dissolved in 5.50 L of a 0.250 M solution of KCl? *molar mass of KCl = 74.55 g/mol*

• 1.48 g

• 103 g

• 1640 g

• 3.39 g

Which solution is more diluted?

Solution 1:

1000 mL of water

60g of salt

Solution 2:

500 mL of water

60 g of salt

• Not enough information to tell

• Solution 1

• Solution 2

• They are equally diluted

What is the molarity of a solution which contains 22.41 grams of NaCl in 50.0 mL of solution?

• 0.488 M
• 7.67 mol
• 7.67 M
• 0.00767 M

Molarity is measured in _____.

• moles per g.

• mols per L.

• moles per mm.

• moles per mL.

How many moles of HNO₃ would be needed to react with 85 mL of 0.75 M KOH?

• 110 mol

• 1.1 mol

• .11mol

• 0.064 mol

• 64 mol

How many mL of 0.50 M HNO₃ would be needed to react with 85 mL of 0.75M KOH?

• 130 mL

• 0.13 mL

• 32 mL

• 0.032 mL

How many grams of water could form in this reaction if 85.0mL of 0.750M KOH are completely neutralized?

• 1.15g

• 282g

• 31.9g

• 113.g

As we dilute a solution.....

• The volume increases and the molarity (M) increases

• The volume increases and the molarity (M) decreases

• The volume decreases and the molarity (M) increases

• The volume decreases and the molarity (M) decreases