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WorksheetsAcid Base Equilibria
Total questions: 11
Worksheet time: 10mins
Which of these is a weak base?
NH3
KOH
HCOOH
HBr
Which of these is a strong acid?
NH3
CH3COOH
HClO3
HF
Which of the following describes H2SO4
Weak acid
Strong base
Strong acid
Weak base
A solution contains 0.04 M of a weak acid. Calculate the pH of the solution knowing that the Ka for the acid is 1.6 x 10-7
It is not possible to solve if the identity of the acid is not known
4.1
4.9
Because the Ka is very small, the pH is close to neutral (about 6)
Which chemical is a proton acceptor?
Acid
Base
The pH of a 1.0 mol dm-3 solution of a weak monobasic acid is 4. What is the dissociation constant of the weak acid?
1.0 x 10-2 mol dm-3
1.0 x 10-4 mol dm-3
1.0 x 10-7 mol dm-3
1.0 x 10-8 mol dm-3
What is the pK a of hydrocyanic acid, if its Ka is 4.9 x 10 −10 ?
6.5
9.1
9.3
5.4
A solution contains 0.04 M of a weak acid. Calculate the pH of the solution knowing that the Ka for the acid is 1.6 x 10-7
It is not possible to solve if the identity of the acid is not known
4.1
4.9
Because the Ka is very small, the pH is close to neutral (about 6)
