WorksheetsAcid and Base (II)
Total questions: 15
Worksheet time: 11mins
Zn(OH)2 + HNO3 ---> H2O + Zn(NO3)2
Which one of following is conjugate base of H2O
H3O+1
H+
OH-
2H2O
Bronsted lowery acid are
Electron pair acceptor
Electron pair donor
proton acceptor
proton donor
20 cm3 of 0.25 mol dm-3 sodium hydroxide solution, NaOH is neautralised with 0.2 mol dm-3 hydrochloric acid, HCl. What is the volume of HCl needed.
25
2.5
1.25
250
x cm3 of 2.0 mol dm-3 hydrochloric acid, that is diluted to 0.2 mol dm-3 to produce 250 cm3 of hydrochloric acid. Calculate the value of x.
25
2.5
1.25
250
What is the concentration in g dm-3 for 18 g of solid copper(II) sulphate is dissolved in water to produce 750 cm3 solution.
240
0.24
24
2400
What is the concentration in g dm-3 for 40g of solid copper(II) sulphate is dissolved in water to produce 20 dm3 solution.
0.2
4
2
10
A wasp sting is alkali. Which substance would neutralise the sting?
Vinegar
Bleach
Baking soda
Distilled water
CH3COOH
formic acid
Ethanoic acid
Acenous acid
Hydroacetic acid
Which statement is correct about acid?
Acid solution conducts electric current
Strong acid ionizes partially in water
Weak acid produces high concentration of hydrogen ions
The presence of water enables acid to produce hydroxide ions
Which acid contains the highest number of hydrogen ions?
25 cm3 of 1 mol dm-3 nitric acid
25 cm3 of 1 mol dm-3 ethanoic acid
25 cm3 of 1 mol dm-3 sulphuric acid
25 cm3 of 1 mol dm-3 hydrochloric acid
pH is a measure of
hydrogen concentration
hydroxide concentration
hydrogen ion concentration
hydroxide ion concentration
The following equation represents the reaction between hydrochloric acid and calcium hydroxide solution.
2HCl(aq) + Ca(OH)2(aq) → CaCl2(aq) + H2O(l)
20 cm3 of 0.1 mol dm-3 hydrochloric acid is neutralised by 50 cm3 of calcium hydroxide solution.
What is the molarity of calcium hydroxide solution?
0.02 mol dm-3
0.04 mol dm-3
0.125 mol dm-3
0.25 mol dm-3
What is the number of moles in 100 cm3 of 1.5 mol dm-3 of nitric acid?
0.015 mol
0.100 mol
0.150 mol
1.500 mol
