CHAPTER 15. Solutions. Solute. A solute is the dissolved substance in a solution. Salt in salt water. Sugar in soda drinks. Carbon dioxide in soda drinks. Solvent. A solvent is the dissolving medium in a solution. Water in salt water. Water in soda. Concentrated vs. Dilute.
A solute is the dissolved substance in a solution.
Salt in salt water
Sugar in soda drinks
Carbon dioxide in soda drinks
A solvent is the dissolving medium in a solution.
Water in salt water
Water in soda
Solids tend to dissolve best when:
Gases tend to dissolve best when:
A physical change occurs when
What substance has a melting point of -94°C and a boiling point of 65°C?
22.4 liters of a gas has a mass of 36.5 grams. What is the identity of the gas?
The concentration of a solution measured in moles of solute per liter of solution.
mol of solute= M
L of solution
What is the molarity of 2.5 mol KCl in 1.0L solution?
What is the molarity of 0.96g MgCl2 in 500mL of solution?
0.96g MgCl2 1mol MgCl2 = .01 mol MgCl2
M= .01 mol MgCl2
How many moles of solute are contained in 15.25mL of a 2.1M solution of CaCl2?
M = mol
# of mol = molarity x L of solution
# of mol = 2.1M (.01525L)
# of mol = .032 mol CaCl2
What is the molarity of 1.35 mol H2SO4 in 245mL solution?
What is the molarity 9.33g Na2S in 450 mL solution?
How many moles of solute are contained in 125mL of a 0.050M solution of Ba(OH)2?
How many grams of solute are contained in 64.3mL of a 0.0238M solution of KOH?
How many grams of solute are contained in 142mL of a 1.4M solution of K2SO4?
Moles of solute in the stock solution = moles of solute after dilution
M1V1 is the molarity and volume of the stock solution and M2V2 is the molarity and volume of the diluted solution
M1V1 = M2V2
How would you prepare 500mL of 3 M HCl using 6 M HCl from the stockroom?
How much 12 M HCl must be used to prepare 500 ml of a 1 M HCl solution?
Molarity and Dilution Problems