WorksheetsStrength of Acids and Alkalis
Total questions: 10
Worksheet time: 10mins
Which acid contains the highest number of hydrogen ions?
25 cm3 of 1 mol dm-3 nitric acid, HNO3
25 cm3 of 1 mol dm-3 ethanoic acid, CH3COOH
25 cm3 of 1 mol dm-3 sulphuric acid, H2SO4
25 cm3 of 1 mol dm-3 hydrochloric acid, HCl
Which pair shows pH value and the degree of dissociation for sulphuric acid, H2SO4?
A
B
C
D
Table shows the pH values of two acidic solutions with the same concentration.
Which statement explains the differences in the pH value?
Q ionises partially whereas R ionises completely.
The concentration of hydrogen ions in Q is lower than R.
The number or moles of hydrogen ions in Q is less than R.
The degree of ionisation of Q is higher than R.
Table shows the concentration of hydrogen ions in hydrochloric acid, HCl and sulphuric acid, H2SO4.
Why is the concentration of hydrogen ions in sulphuric acid, H2SO4 is higher than in hydrochloric acid, HCl?
Sulphuric acid, H2SO4 is denser.
Sulphuric acid, H2SO4 is more soluble in water.
Sulphuric acid, H2SO4 is a stronger acid.
Sulphuric acid, H2SO4 is a diprotic acid.
Alkali Y of concentration 1 mol dm-3 has a pH of 13.
Which statement is true about alkali Y?
Slightly soluble in water.
Reacts only with weak acid.
The degree of ionisation in water is high.
Has a low concentration of hydroxide ions, OH-.
Table shows the degree of dissociation of four solutions of alkalis which have the same concentration.
Which solution has the highest pH value?
W
X
Y
Z
Diagram shows an organ in the human digestive system.
What is the pH value of gastric juice?
2
5
7
14
Which of the following substances ionise completely in water?
Ammonia, NH3
Nitric acid, HNO3
Ethanoic acid, CH3COOH
Sodium hydroxide, NaOH
Which of the following is correct about weak alkaline solution?
Have pH value of 13.
Partially ionised in water.
Concentration of the solution is low.
Does not react with acid.
Which of the following statements correctly describe a strong acid?
Have a high pH value.
Ionises completely in water.
Has a high concentration of hydrogen ions.
Exists as molecules in water.
