Magnet Unit 4 Practice Test - Solutions, Acids and Bases

What is the molality of a solution when 48 g of NaCl is dissolved in 5 kg of water?

• 557 m

• 4.14 m

• .17 m

• 6.04 m

What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?

• 0.018 M
• 0.0011 M
• 1.052 M
• 0.062 M

How many mL of 10.8M HCl are required to make 100.0 mL of 3.00M acid?

(Hint: use the dilution equation)

• 27.8 mL

• 27.78 mL

• 2.8 mL

• 278 mL

At approximately what temperature does the solubility of sodium chloride, NaCl, match the solubility of potassium dichromate, K₂Cr₂O₇?

• 60 ºC
• 30 ºC
• 50 ºC
• 83 ºC

Which solute is the most soluble at 10 ⁰C?

• KI
• KClO₃
• NH₄Cl
• NH₃

When 20 grams of potassium chlorate, KClO₃, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:

• supersaturated
• saturated
• unsaturated

How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide? 

• 2
• 3
• 4
• 6 

When a solution is very concentrated, it has a high amount of _________ to _________.

• solute to solvent
• solvent to solute
• solvent to solution
• solution to solute

What is the concentration, in percent by mass, of 0.62 g of solute in 45.0 g of solution?

• 0.014 %

• 1.4 %

• 0.13%

What mass of solute is needed to make 100.0 g of a 3.4% solution?

• 3.4 g

• 34 g

• 2941 g

• 0.34 g

Tags

NGSS.HS-PS1-7