Chemistry: Concentration of Solutions/Molarity

temperature of the water

The solubility of a salt in a given volume of water depends primarily on the

Molarity = moles of solute/Liters of solution OR M = mol/L

Molarity Formula:

Concentration

Tells how much solute is dissolved in a given amount of solvent.

Molarity

The number of moles of solute in 1 liter of solution.

M

Units for Molarity are ________!

8M

What is the molarity of a solution that contains 4.0 grams of NaOH in 0.50 L of solution?

4.0 M

Calculate the molarity of 2.0 moles of HCl dissolved in 500. mL of solution.

least amount, sig figs

Round to the _______ _______ of _______ _______.

1000, C

How to convert mL to L:
Option 1: Divide by _________.
Option 2: Use Table _____ on reference table to figure out how to move the decimal.

moles, GFM
molarity

Molarity from Grams: If you are given grams instead of mole, follow these steps:

Step 1. Convert grams to __________ by finding the _________.
Step 2. Use the __________ equation.

0.25 M

What is the molarity of a solution containing 82.0 g of Ca(NO3)2 in 2.0 L of solution?

moles, grams
53.0 g

What mass of sodium carbonate is required to prepare 2.00 L of 0.250 M in an Na2CO3 solution?

Step 1: Find out how many ________ are needed.
Step 2: Convert moles to __________.

1000

1L = _____________mL

0.250 L

Calculate the molarity of 12g of HCl in 250 mL of solution.

0.60 mol

Calculate the total moles of solute in 1.7 L of 0.35M in NaOH.

25.0%

Calculate the percent by mass of 50.0 g of solute in 200.0 grams of solution.