STOI MS Vol mix AB OR New - Contents
- Page 1Introduction - ReviewThis shows how to relate a given concentration and volume of one substance to a concentration or volume of a substance with which it reacts
- 16 marksPage 2Problem 1Calculate the volume in L of 0.250 mol L–1 HCl required to react completely with 37.50 mL of 0.100 mol L–1 NaOH according to the equation given.
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O - 16 marksPage 3Problem 2
- 20 marksPage 4Problem 2Titration of 25.00 mL of 0.0494 mol L–1 Na2CO3 with hydrochloric acid requires 21.22 mL to reach the endpoint. The reaction occurring in the flask is given below. Calculate the concentration of the hydrochloric acid.
Na2CO3(aq) + 2HCl(aq) → 2NaCl(aq) + H2O + CO2(g) - 16 marksPage 5Problem 4
- Page 6Problem 3 - ReviewVinegar is an aqueous solution of acetic acid (ethanoic acid, CH3CO2H). If 25.00 g of vinegar is titrated completely by 35.46 mL of 0.2440 mol L–1 NaOH, what is the percentage by mass of ethanoic acid (acetic acid) in the vingar?
NaOH + CH3CO2H → CH3CO2Na + H2O - 22 marksPage 7Problem 5