A 25 cm3 sample of an unknown concentration of sulfuric acid was titrated against 0.1 mol dm-3 sodium hydroxide. The average titre was 20 cm3. Calculate the concentration of the sulfuric acid.
Balanced equation: H2SO4 + 2NaOH → 2H2O + Na2SO4moles of NaOH = c x v = 0.1 mol dm-3 x (20/1000) dm3 = 0.002 molStoichiometry: H2SO4:NaOH = 1:2moles of H2SO4 = (0.002 mol)/2 = 0.001 molc=n/v= (0.001 mol)/((25/1000) dm3)= 0.04 mol dm-3
JK
Related Chemistry A Level answers
All answers ▸"Sulfur Dioxide can be represented as a sulfur atom with double bonds to each of two oxygen atoms, explain the shape of this molecule and predict the bond angle".
How could you obtain a carboxylic acid from oxidation of an alcohol and what type of alcohol would be suitable?
Explain trend in why the ionisation energies increase across the period
Why do transition metals form coloured compounds?