Unit 11 HW #2: Dilution and Neutralization Theory

Front

What is the formula for calculating molarity?

Back

Molarity (M) = moles of solute / liters of solution.

Front

Define dilution in the context of solutions.

Back

Dilution is the process of reducing the concentration of a solute in a solution, usually by adding more solvent.

Front

What is neutralization in chemistry?

Back

Neutralization is a chemical reaction between an acid and a base that produces water and a salt.

Front

How do you calculate the molarity of a diluted solution?

Back

M1V1 = M2V2, where M1 and V1 are the molarity and volume of the concentrated solution, and M2 and V2 are the molarity and volume of the diluted solution.

Front

What is the molarity of a solution if 0.5 moles of solute are dissolved in 2 liters of solution?

Back

Molarity = 0.5 moles / 2 L = 0.25 M.

Front

If 30.0 ml of 2.0 M HCl is neutralized with NaOH, how do you find the molarity of NaOH?

Back

Use the neutralization equation: M1V1 = M2V2, where M1 and V1 are for HCl, and M2 and V2 are for NaOH.

Front

What is the resulting molarity when 250.0 ml of 3.7 M KMnO₄ is diluted to 2.00 L?

Back

Resulting molarity = (3.7 M * 250 ml) / 2000 ml = 0.4625 M.

Front

How do you find the concentration of an unknown acid when neutralized by a known base?

Back

Use the equation: M_acid * V_acid = M_base * V_base.

Front

What is the resulting molarity when 800.0 ml of water is added to 200.0 ml of 2.7 M HCl?

Back

Resulting molarity = (2.7 M * 200 ml) / (200 ml + 800 ml) = 0.54 M.

Front

What is the volume of 0.500 M CuSO₄ needed to prepare 100.0 ml of 0.150 M solution?

Back

Volume = (0.150 M * 100 ml) / 0.500 M = 30.0 ml.