Solutions Molarity etc Practice Quiz

When you make a dilution, which of these values remains constant?

• The molarity (M)

• The total moles of solute

• The volume (V)

• The concentration

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

Molarity is ...

• grams of solute/deciliters of solvent.

• grams of solute/liters of solution.

• moles of solute/liters of solution.

• moles of solute/milliliters of solvent.

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250 mL?

• 15.9 M
• 0.636 M
• 0.642 M
• 1.59 M

What is the molarity of a solution made by adding 1.565 moles of PbNO₃ to 500 mL?

• 300. M
• 31.3 M
• 3.13 M
• 1.56 M

When the volume of solvent increases, the mass of solute that can dissolve in a saturated solution...

• increases

• decreases

• stays the same

At 30'C, which substance has the lowest solubility?

• KNO3

• KBr

• NaCl

• Yb2(SO4)3

At which temperature do KBr and KNO3 have the same solubility?

• 60

• 55

• 50

• Never

Determine the solubility for the substances at 55'C and arrange them in order from lowest to highest solubility.

• NaCl, NH4Cl, KBr, NaNO3

• NaCl, NH4Cl, NaNO3, KBr

• NH4Cl, NaCl, NaNO3, KBr

• NaNO3, KBr, NH4Cl, NaCl

How did Evan Break his leg

• He went to Menchie's in Norco

• He fell off stage while rehearsing with choir for the roaring twenties event

• He tried to jump into the foam pit at Big Air jump park, and failed

• He was eating a sandwich with 3 slices of bread, and an enemy (the cat) pushed him off his chair