Titrations and dilutions practice

10.0 mL of a solution of hydrochloric was titrated with a 0.100 mol L^-1 solution of potassium hydroxide. 13.5 mL of the base was required for neutralisation. Calculate the concentration of the hydrochloric acid solution. Don't forget to round to 3 s.f. A unit is not required.

KOH + HCl --> KCl + H₂O

13.40 mL of 0.10 mol L^-1 NaOH neutralised 25 mL of hydrochloric acid. Find the concentration of acid. The acid and base react in a ratio of 1:1. Round to 3 s.f., unit not required.

17.35 mL of NaOH were needed to reach the endpoint when titrated against a 10 mL sample of H₂SO_4. Concentration of NaOH: 1.05 mol L^-1. Record your answer to 3 s.f., no unit required.

2 NaOH + H₂SO₄ --> Na₂SO₄ + 2 H₂O

What is this piece of apparatus called

• Pipette

• Burette

• Janette

• Cuvette

What is the endpoint of a titration

• Where the amount of acid and base are balanced according to the equation
• Where there is no base
• At the end

A 25.0 mL sample of HCl was titrated to the endpoint with 15.0 mL of 2.0 mol L^-1 NaOH. What is the molarity of HCl?

NaOH + HCl --> NaCl + H₂O

• 1.21 mol L^-1 HCl

• 1.200 mol L^-1 HCl

• 0.600 mol L^-1 HCl

• 1.20 mol L^-1 HCl

• 0.675 mol L^-1

• 0.900 mol L^-1

• 1.05 mol L^-1

• 0.68 mol L^-1

A dilution is when

• solute is added to the volume of stock solution

• water is added to the volume of stock solution

• solute is removed from the volume of stock solution

• water is removed from the volume of stock solution

What is the reading on this burette?

• 4.40mL
• 3.50mL
• 3.60mL
• 4.50mL

Read this carefully!

I have 25.00 mL of 1.0 mol L^-1 HCl which neutralises 20 mL of NaOH. What is the concentration of the NaOH? They react in a ratio of 1:1

• 1.3 mol L^-1

• 1.250 mol L^-1

• 1.25 mol L^-1