Week 2 Review: Solutions

How much KNO₃ solute is saturated at 40 degrees?

• 75

• 55

• 65

• 85

How much NaBr solute is saturated at 70 degrees?

• 110

• 120

• 130

• 140

At what temperature can you fully dissolve 120g of NaBr?

• 70

• 20

• 100

• You cannot determine this

What type of a solution is 55g KCl at 70ºC in 100g H₂O?

• Saturated

• Unsaturated

• Supersaturated

Which of the following refers to the substance that is being dissolved in a solution?

• solvent

• solute

• mixture

Which of the following actions will NOT increase the rate of dissolution (dissolving)?

• Stirring the solution

• Decreasing the temperature

• Increasing the surface area of the

  solute

• Increasing the temperature

Tags

NGSS.HS-PS1-5

Which of the following should be done to make the solute dissolve faster in the solvent?

• stir the solute

• freeze the solute

• decrease the temperature of the solvent

• increase the particle size of the solute

Tags

NGSS.HS-PS1-5

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

• 2
• 3
• 4
• 6 

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 moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?

• 1074 mol
• 0.069 mol
• 1.07 mol
• 62.7 mol

Tags

NGSS.HS-PS1-7