WorksheetsTitration curves pre-lesson check
Total questions: 11
Worksheet time: 17mins
A solution of CH3COONa is
acidic
neutral
basic
A solution of NH4Cl is
acidic
neutral
basic
Calculate the pH of 0.125 mol dm-3 solution of CH3CH2COONa, given that Ka of CH3CH2COOH is 1.35x10-5.
Leave your answer to 3 sf.
(a)
Which of the following pairs of substances will form a buffer solution?
HCl and NaCl
CH3COOH and NH3
NaOH and NaCl
NH3 and (NH4)2SO4
Which of the following solutions has the greatest buffering capacity?
1 dm3 solution containing 1.0 mol CH3COOH and 1.0 mol CH3COONa.
1 dm3 solution containing 0.5 mol CH3COOH and 0.5 mol CH3COONa.
1 dm3 solution containing 0.3 mol CH3COOH and 0.7 mol CH3COONa.
1 dm3 solution containing 0.7 mol CH3COOH and 0.3 mol CH3COONa.
There are buffering regions found in all titration curves.
True
False
Sketch on the axes below the titration curve when 40 cm3 0.5 mol dm-3 NaOH is added to 20 cm3 0.5 mol dm-3 CH3COOH.
The titration curve is obtained when NaOH is added to CH3COOH.
Which substance is/are present in the solution at point A?
CH3COOH
NaOH
CH3COO-Na+
CH3COOH and CH3COO-Na+
The titration curve is obtained when NaOH is added to CH3COOH.
Which substance is/are present in the solution at point B?
CH3COOH
NaOH
CH3COO-Na+
CH3COOH and CH3COO-Na+
The titration curve is obtained when NaOH is added to CH3COOH.
Which substance is/are present in the solution at point C?
CH3COOH
NaOH
CH3COO-Na+
CH3COOH and CH3COO-Na+
The titration curve is obtained when NaOH is added to CH3COOH.
Which substance is/are present in the solution at point D?
CH3COOH
NaOH
CH3COO-Na+
CH3COOH and CH3COO-Na+
