Titration

H₂SO₄ + 2NaOH --> Na₂SO₄ + 2H₂O

To 2 dp, what volume of 2.0 mol/dm³ H₂SO₄ solution will neutralise

36.20cm³ of 2.0 mol/dm³ NaOH solution?

• 36.20cm³

• 18.10cm³

• 0.04cm³

• 0.02cm³

Answer explanation

Each mole of H₂SO₄ neutralises 2 moles of NaOH

Tags

moles = conc x vol

vol = moles / conc

reacting ratio

What is the concentration of the NaOH solution, if 20.0cm³ of it is neutralised by 25.00cm³ of 0.1 mol/dm³ H₂SO₄ solution?

• 0.75 mol/dm³

• 1.0 mol/dm³

• 1.25 mol/dm³

• 0.25 mol/dm³

Answer explanation

Each mole of H₂SO₄ reacts with 2 moles of NaOH

Tags

conc = moles / vol

reacting ratio

moles = conc x vol

acids as monoprotic/diprotic/triprotic

What is the concentration of the H₂SO₄ solution, if 40.0cm³ of it is neutralised by 20.00cm³ of 0.1 mol/dm³ NaOH solution?

• 0.025 mol/dm³

• 4.00 x 10^-5 mol/dm³

• 0.03 mol/dm³

• 25.00 mol/dm³

Tags

conc = moles / vol

reacting ratio

moles = conc x vol

acids as monoprotic/diprotic/triprotic

What is the concentration of the NaOH solution, if 36.00cm³ of it neutralises 25.0cm³ of 2.4mol/dm³ H₃PO₄ solution?

• 2.16 x 10^-3 mol/dm³

• 4.5 x 10^-3 mol/dm³

• 5.0 mol/dm³

• 7.2 x 10^-4 mol/dm³

Answer explanation

Each mole of H₃PO₄ neutralises 3 moles of NaOH

Tags

conc = moles / vol

reacting ratio

moles = conc x vol

acids as monoprotic/diprotic/triprotic

Write a balanced chemical equation for the reaction of the following acid and base:

___ H₂SO₄ + ___KOH -->

For the acid-base titration combination of NaOH with 0.79 mol HCl, find the number of moles of NaOH that would be the chemically equivalent amount of HCl.

• 0.79 mol

• 1.6 mol

• 0.38 mol

• 3.2 mol

Tags

NGSS.HS-PS1-7

If it takes 50 mL of 0.5 M Ca(OH)₂ to neutralize 125 mL of sulfuric acid, what is the concentration of the acid?

• 0.2 M

• 5 M

• 0.5 M

What is the molarity of a NaOH solution if 11.6 mL of 3 M HCl was used to neutralize 25 mL of NaOH?

• 392 M

• 0.155 M

• 0.718 M

I have 50cm³ of 0.1M HCl. How many moles of NaOH will I need to neutralise it?

• 5

• 0.5

• 0.05

• 0.005

Tags

NGSS.HS-PS1-7

What mass of KHP will be completely neutrilized by 32.57 cm³ 0.175 M standard NaOH solution? The Molar Mass of KPH is 204.22 g/mol.

• 23.28 g KHP

• 1.164 g KHP

• 11.64 g KHP

• 2.328 g KHP