Solutions

How many grams of K₂Cr₂O₇, are soluble in 100 g of water at 95 ºC?

• 83 grams
• 75 grams
• 40 grams
• 12 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which substance is MOST soluble at 0 ºC?

• KI
• NaNO₃
• NaCl
• Ce₂(SO₄)₃

Tags

NGSS.HS-PS1-5

Which of the following usually makes a substance dissolve faster in a solvent?

• agitating the solution
• increasing the particle size of the solute
• lowering the temperature
• decreasing the number of particles

Tags

NGSS.HS-PS1-5

In a cup of tea what is the solvent?

• tea
• water
• sugar

What is the molarity of a solution which contains 22.41 grams of NaCl in 50.0 mL of solution?  MM = 58.44 g/mol 

• 0.488 M
• 7.66 M
• 7.67 M
• 0.00767 M

You dissolve the max of KF in H₂O, heat it up & dissolve more, then let it cool down. The solution is _______________

• diluted 
  
• unsaturated 
• saturated 
• supersaturated

How much water would I need to add to 300 mL of a 3.0 M KCl solution to make a 0.5 M solution?

• 1800 mL 
• 1500 mL 
• 900 mL 
• 100 mL

If a compound is aqueous, it means that 

• the solute is water 
• the solvent is water 
• the solution is wet 
• the solvent is polar

A 3.5 M KNO₃ solution contains 3.5 moles of KNO₃ dissolved in

• 1.0 liter of solution 
• 1.0 milliliter of solvent 
• 3.5 liter of solvent 
• 3.5 milliliter of solution

The most commonly used form of concentration in chemistry is

• molarity
• molality
• percent by volume
• percent by mass