Choose the letter of the best answer. Write the chosen letter before each number. 1. A solution is made by dissolving some salt in a beaker of water. Water is referred to as the

a. Filtrate

b. solute

c. solution

2. It is the amount of solute actually dissolved in a given amount of solvent.

a. Solute

b. Concentration

3. A solution that is considered dilute would (be).

a. Dark in color

2. Dark

b. Have a: B. a strong scent

c. saturated solution

d. supersaturated solution

c. have a large amount of solute

d. have small amount of solute

4. How do you decrease the concentration of a solution? w do you a. Add more powder of solute

c. less powder or solute

d. less water or solvent

c. 10g of salt in 100 mL of water.

d. Og of salt in 100 mL in water

in order from most

b. Add more water or solvent

5. Which solution is more concentrated?

a. 25g of salt in 100mL of water

b. 5g of in 100 mL of water

6. (Solution A: 61g/50mL; Solution B: 21g/50 mL; Solution C; 41g/50mL) Put them concentrated incentrate least concentrated.

a. A, B, C b. C, B, A

c. A, C, B

d. C, A, B

7. Which is the acceptable way of expressing concentration of solutions?

a. Mass of solute/ 100g of water b. Mass of solute/ mass of solvent

c. Mas of solute/ volume of solution

d. Volume of solvent/ volume of solution

8. What is the percent by volume of ethanol that contains 55mL of solute dissolved in 145 mL of water?

a. 27.5%

b. 37.9%

c. 48.0%

d. 55.0%

9. What is the concentration in m/v % of a solution containing 25.0g NaCl in 500.0 mL solution? b. 2.00%

a. 2.50%

c. 0.200%

d. 5.00%

10. How many mL of 2.00% (m/v) salt solution would contain 3.50g of salt?

a. 105 mL

b. 70.0 mL

c. 35.0 mL

d. 175 ml

11. If we increase the amount of solute in a solution, but do not add any additional water. What will

happen to the concentration?

a. The concentration will go up. b. The concentration will go down.

c. The concentration will stay the same.

d. The concentration will either go up or down.

12. What is the concentration in % m/v of the solution prepared by dissolving 9.3g of NaCl in water to

produce 350 mL of this solution?

a. 37.6%

b. 0.455%

c. 3.26%

d. 2.66%

13. What is the percent by mass of sodium hydrogen carbonate that has 20g of solute in 600mL of

water?

a. 3.33%

b. 3.45%

14. If you have 1500g of bleach and the percent

NaOCI in the solution?

a. 543g

b. 54.3g

How many grams of solvent are

a. 1494.57g

b. 957g

c. 3.23% by mass of

c. 5.43g previous question?

c. 1445.7g

d. 3.50%

bleach is 3.62%, then what is the mass of

d. 0.543g

d. 1500g​