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Laabri

Unit 9 Solutions Formative 2026

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12 Nsɛmmisa
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1.

Ionic compounds can produce electrolytes when dissolved in water.

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2.

When a coke can is opened, it fizzes. This is an example of the tyndall effect.

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3.

Salad dressing is an example of a colloid.

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4.

Increasing the temperature increases the solubility of gases.

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5.

Adding table salt to water lowers the boiling point and raises the freezing point of water.

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6.

Match the following word(s) that would correctly fill in the blank(s) for each statement.

Draggable itemarrow_right_altCorresponding Item

Boiling point _________ and freeIng point _________ are two colligative properties we calculated.

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volatile

_____________ is defined as moles of solute per kilogram of solvent.

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nonpolar

____________ ___________ allows plants to draw water up their stems.

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raising/lowering

Oil is considered __________ because it has a symmetrical shape and is immiscible with water.

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capillary action

Paint thinner is referred to as __________ because it evaporates quickly.

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saturated

___________ is defined as moles of solute per liter of solution.

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molality

If you poured sugar in a pitcher of Kool-Aid so that it would have equal amounts of sugar and Kool-Aid, the solution is termed: _______________

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molarity

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7.

Calculate the grams of sulfuric acid needed to make a 2.40 M solution that is 550.0 mL.

Don't forget a unit & sig figs!!

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8.

Determine the number of grams of calcium chloride to lower the freezing point of 170.0 g of water to -4.30°C.

Don't forget a unit & sig figs!!

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9.

Determine the amount of water needed to make a solution that is 0.530 m having 25.00 g of sodium sulfate.

Don't forget a unit & sig figs!!

Calculate the new boiling and freezing point fo a solution in which 30.0 g of sodium fluoride is added to 1200.0 g of water.

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10.

New freezing point:

Don't forget a unit & round to THREE sig figs!!

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11.

New boiling point:

Don't forget a unit & round to FOUR sig figs!!

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12.

79.6 g of an unknown solute is added to 1200 g water to produce a solution having a boiling point of 104.6°C. What is the formula weight of the unknown solute?

Don't forget a unit & round to THREE sig figs!!