ERHS Chem CK-12 - Chapter 12 - Solutions, Acids, Bases

What is the molarity of 4.00 grams of sodium chloride in 3.80 liters of solution?

• 0.0180 M

• 0.259 M
• 1.05 M

• 1.80x10^-5 M

The ___ is the chemical being dissolved in a solution.

• solute
• solvent
• substance
• unsaturated

If a solution has the ability to dissolve more salt, it is classified as _______________.

• supersaturated
• saturated
• unsaturated
• endothermic

You attempt to dissolve 80 grams of lead (II) nitrate, Pb(NO₃)₂, in 100 grams of water at a temperature of 30 ºC. Approximately how many grams of the would still be undissolved at the bottom of the beaker?

• 20 grams
• 80 grams
• 66 grams
• 14 grams

How many grams of sodium nitrate, NaNO₃, are soluble in 100 g of water at 10 ºC?

• 80 grams
• 100 grams
• 40 grams
• 10 grams

When 50 grams of potassium chloride, KCl, is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:

• supersaturated
• unsaturated
• saturated

When no more solute dissolves the solution is classified as _________.

• supersaturated

• unsaturated

• saturated

• exothermic

How many grams of K₂Cr₂O₇, are soluble in 100 g of water at 95 ºC?

• 83 grams
• 75 grams
• 40 grams
• 12 grams

How do you know when you have a saturated solution?

• You don't see anymore material in the solution. It has dissolved.

• The material dissolves and no more will dissolve because you see it collect at the bottom.

• The solution is bubbling and cloudy.

• The solution is clear and there is nothing at the bottom.

When salt (NaCl) dissolves, does it break into ions or stay as molecules?

• It is ionic - it breaks into ions

• It is covalent - It stays as molecules

Tags

NGSS.HS-PS1-7