Which statement describes KClaq A K is the

Which statement describes KCl(aq)? A. ) K+ is the solute and Cl- is the solvent B. ) Cl- is the solute and K+ is the solvent C. ) KCl is the solute and water is the solvent D. ) Water is the solute and KCl is the solvent

At STP, which of these substances is most soluble in Water is polar H 2 O? like dissolves like C. ) HCl A. ) CCl 4 asymmetric polar symmetric nonpolar D. ) N 2 B. ) CO 2 symmetric nonpolar

The solubility of KCl. O 3(s) in water increases as the Solids are more soluble at higher temperatures, which is why you use hot water when washing dishes A. ) temperature of the solution increases B. ) temperature of the solution decreases C. ) pressure on the solution increases D. ) pressure on the solution decreases Pressure does not effect the solubility of solids

As the pressure on a gas confined above a liquid increases, the solubility of the gas in the liquid A. ) decreases B. ) increases C. ) remains the same Increasing pressure makes gases more soluble, just like putting a cap on a bottle of soda keeps is carbonated longer

Hexane (C 6 H 14) and water do not form a solution. Which statement explains this phenomenon? A. ) Hexane is polar and water is nonpolar. B. ) Hexane is ionic and water is polar. C. ) Hexane is nonpolar and water is polar. D. ) Hexane is nonpolar and water is ionic.

Which compound is soluble in water? A. ) barium phosphate B. ) calcium sulfate C. ) silver iodide D. ) sodium perchlorate

Which ion, when combined with chloride ions, Cl-, forms an insoluble substance in water? A. ) Fe+2 B. ) Mg+2 C. ) Pb+2 D. ) Zn+2

Which of the following compounds is least soluble in water? A. ) copper (II) chloride B. ) aluminum acetate C. ) iron (III) hydroxide D. ) potassium sulfate

Which substance forms an unsaturated solution when 80 grams of the substance is dissolved in 100 g of H 2 O at 10°C? A. ) KI US Below B. ) KNO 3 SS Above C. ) Na. NO 3 S On line D. ) Na. Cl SS Above

Which compound is least soluble in 100 grams of water at 40 o. C? Lowest line, least solute A. ) SO 2 B. ) Na. Cl C. ) KCl. O 3 D. ) NH 4 Cl

100 grams of water is saturated with NH 4 Cl at 50 o. C. If the temp is lowered to 10 o. C, how much NH 4 Cl will precipitate? 51 g - 34 g A. ) 5. 0 g B. ) 17 g C. ) 30. g D. ) 50. g

What is the total mass of solute in 1000. grams of a solution having a concentration of 5 parts per million? A. ) 0. 005 g B. ) 0. 05 g C. ) 0. 5 g D. ) 5 g 5 ppm = X x 1, 000 1000 g

Which solution is the most concentrated? A. ) 1 mole of solute dissolved in 1 liter of solution 1 mol/1 L = 1 M B. ) 2 moles of solute dissolved in 3 liters of solution 2 mol/3 L = 0. 67 M C. ) 6 moles of solute dissolved in 4 liters of solution 6 mol/4 L = 1. 5 M D. ) 4 moles of solute dissolved in 8 liters of solution 4 mol/8 L = 0. 5 M

What is the total number of moles of solute in 2. 0 liters of 3. 0 M Na. OH? A. ) 1. 0 mole B. ) 2. 0 moles C. ) 3. 0 moles D. ) 6. 0 moles 3. 0 M = X 2 L

What is the molarity of a solution that contains 40. grams of Na. OH in 0. 50 liter of solution? A. ) 1. 0 M B. ) 2. 0 M C. ) 0. 50 M D. ) 0. 25 M 40 g x 1 mol = 1 mol 40 g X = 1 mol 0. 5 L

What is the total number of grams of Na. I(s) needed to make 1. 0 liter of a 0. 010 M solution? A. ) 0. 015 B. ) 0. 15 C. ) 1. 5 D. ) 15 0. 010 M = X 1 L 0. 010 mol x 150 g = 1 mol

A student wants to prepare a 1. 0 -liter solution of a specific molarity. The student determines that the mass of the solute needs to be 30. grams. What is the proper procedure to follow? A. ) Add 30. g of solute to 1. 0 L of solvent. B. ) Add 30. g of solute to 970. m. L of solvent to make 1. 0 L of solution. C. ) Add 1000. g of solvent to 30. g of solute. D. ) Add enough solvent to 30. g of solute to make 1. 0 L of solution.

How many milliliters of 12. 0 M HCl(aq) must be diluted with water to make exactly 500. m. L of 3. 00 M hydrochloric acid? A. ) 100. m. L B. ) 125. m. L C. ) 200. m. L D. ) 250. m. L (12. 0 M)V = (3. 00 M)(500 m. L)

A 20. -milliliter sample of 0. 60 M HCl is diluted with water to a volume of 40. milliliters. What is the new concentration of the solution? A. ) 0. 15 M B. ) 0. 60 M C. ) 0. 30 M D. ) 1. 2 M (0. 6 M)(20 m. L) = M(40 m. L)

At standard pressure when Na. Cl is added to water, the solution will have a A. ) higher freezing point and a lower boiling point than water B. ) higher freezing point and a higher boiling point than water C. ) lower freezing point and higher boiling point than water D. ) lower freezing point and a lower boiling point than water