Module 3: Solutions and Acid-Base Chemistry

Define each term in the dilution equation
M_c: ​ (a)  

V_c: ​ (b)  

M_d: ​ (c)  

V_d: ​ (d)  

• concentration of concentrated solution
• volume of concentrated solution
• concentration of diluted solution
• volume of diluted solution

A diluted solution is prepared by mixing 10 mL of 2.5 M stock solution with water to a total volume of 100 mL.
What is the concentration of the diluted solution?

Mathematical Equivalence

ON

Answer explanation

Given

M_c = concentration of stock solution = 2.5 M

V_c = volume of stock solution = 10 mL

V_d = volume of diluted solution = 100 mL

Unknown

M_d = concentration of diluted solution

M_d = (M_cV_c)/V_d

M_d = (2.5 * 10)/100

M_d = 0.25 M

The substance that gets dissolved in a solution

• solute
• compound
• mixture
• solvent

What does it mean to say two liquids are "miscible"?

• The two liquids dissolve in each other in all proportions

• The two liquids are insoluble in each other

• When two liquids form separate layers and do not mix
• The two liquids will dissolve in each other in appreciable, but limited

What is the formula for molarity?

Tags

NGSS.HS-PS1-5

150. 150. mL is equivalent to how many L?

Mathematical Equivalence

ON

Answer explanation

1 L = 1000 mL

This is worth memorizing!!!

150 mL * (1 L/1000 mL) = 0.150 L

150. 750. mL is equivalent to how many L?

Mathematical Equivalence

ON

Answer explanation

1 L = 1000 mL

This is worth memorizing!!!

750 mL * (1 L/1000 mL) = 0.750 L

What type of membrane is permeable to solvent, ions, and small molecules, but is impermeable to larger colloid particles?

• Dialyzing membranes

• Osmotic membranes

• Fully permeable membranes
• Macro-permeable membranes

Bronsted acids are proton (H+) ​ (a)   ,
and Bronsted bases are proton (H+) ​ (b)   .

• donors
• acceptors

What is formed after an acid donates a proton?

• Conjugate acid

• Weak acid

• Conjugate base

• Buffer