Solutions

Front

What is it about the water molecule that makes it a great solvent?

Back

water demonstrates polarity; a partial charge on each side of the molecule

Front

Formula to solve for the Molarity of a solution with .4 moles of HCl in 9.5 L of solution?

Back

M = .4 mol / 9.5 L

Front

A sample of 0.0255 mol potassium hydroxide, KOH, was dissolved in water to yield 10.0 mL of solution. Which amount would you need to change to solve for molarity?

Back

Change 10 mL to L

Front

What volume of 0.125 M KMnO4 is required to yield 0.180 mol of potassium permanganate, KMnO4?

Back

0.125 M = 0.180 mol / L

Front

Which formula should you use to convert 2.00 L of 0.300 M sulfuric acid, how many mL of a 1.00 M stock solution should be used? Options: molarity formula, dilution formula, both will work, neither will work

Back

dilution formula

Front

Which of the following would result in being able to dissolve a greater amount of gas in a
solution? Options: Heat the gas and solution, Decrease the pressure of the solution, Make the gas an electrolyte, Cool the gas and solution

Back

Cool the gas and solution

Front

90 grams of sodium nitrate (NaNO3) are put into 100 grams of water and stirred. The final mixture has a temperature of 20°C. About how many grams of the sodium nitrate dissolved? Options: 23, 73, 80, 88

Back

88

Front

Which student does the best job of communicating the general features of the solubility graph? Options: Most salts require 100 grams of water in order to dissolve completely., Table salt has the average solubility of all salts., The solubility of most salts increases with increasing temperature., Most curves show a decreasing slope as the temperature rises.

Back

The solubility of most salts increases with increasing temperature.

Front

Which of the following would decrease the rate of solution when dissolving a solid in water? Options: Raise the temperature of the solution, Crush the solid before mixing, Stir the solution after mixing, Use a single cube of solid

Back

Use a single cube of solid

Front

Best way to determine if an aqueous solution is supersaturated?

Back

add a seed crystal