1. A 20.0 cm3 sample of lithium hydroxide solution of unknown
concentration is neutralised by 12.25 cm3 of 0.15moldm‐3 sulfuric acid.
Calculate the concentration of the lithium hydroxide solution.
2.
A solution is made by dissolving 0.40 g of solid sodium hydroxide in 250cm3 of
water. It is found that 28.2 cm3 of this solution is needed to completely
neutralise a 40.0cm3 sample of ethanoic acid (CH3COOH) of unknown
concentration. Calculate the concentration of the ethanoic acid.
3. 28.0 cm3 of 0.75 moldm‐3 hydrochloric acid was used to neutralise 40.0cm3 of
potassium hydroxide solution. What was the concentration of the potassium
hydroxide solution?
4. 15.3 cm3 of 1.5M sodium hydroxide was used to neutralise 35.0cm3 of nitric
acid. What was the concentration of the nitric acid?
5. A solution of hydrochloric acid is made by dissolving hydrogen chloride gas in
100.0cm3 water. This solution neutralises a 15.0cm3 sample of 0.10 moldm‐3
sodium carbonate solution. a. What mass of hydrogen chloride gas was
dissolved in 100.0cm3of water? b. What volume of hydrogen chloride was this?
6. The carbonate of metal M has the formula M2CO3. A sample of M2CO3, of
mass 0.394g, required the addition of 21.7cm3 of a 0.263 mol dm‐3 solution of
hydrochloric acid for complete reaction. Calculate the relative formula mass of
M2CO3 and therefore deduce the identity of M.