Acid Base Calculations

Turns Universal Indicator Red

• Acid

• Base

• Neutral

pH number 14

• Acid

• Base

• Neutral

Turns blue litmus paper red

• Acid

• Base

• Neutral

Sodium hydroxide is:

• Acid

• Base

• Neutral

Sodium carbonate is:

• Acid

• Base

• Neutral

Has equal amounts of OH^- and H⁺ ions

• Acid

• Neutral

• Base

How many moles of NaOH will neutralise 18.3cm³ of 1.0 mol / dm³ HCl solution?

• 6.02 x 10²³ mol

• 1.83 x 10⁴ mol

• 0.0183 mol

• 18.3 mol

Tags

moles = conc x vol

How many moles of H₂SO₄ will neutralise 14.2 cm³ of 0.01 mol/dm³ NaOH?

• 1.42 x 10⁴ mol

• 7.1 x 10^-5 mol

• 1.42 x 10^-4 mol

• 7.1 x 10⁵ mol

Answer explanation

Each mole of H₂SO₄ neutralises 2 moles of NaOH

Tags

moles = conc x vol

reacting ratio

What volume of 0.01 mol/dm³ HCl solution will neutralise 50cm³ of 0.01 mol/dm³ NaOH solution?

• 0.25cm³

• 25cm³

• 50cm³

• 100cm³

Tags

moles = conc x vol

vol = moles / conc

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