Acids, Bases And Salts_Proticity, Strength, PH And Indicators Question Preview (ID: 51981)
Proticity, Strength, PH And Indicators.
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Which is a strong acid?
a) Ethanoic acid
b) Sulfuric acid
c) Sodium hydroxide
d) Potassium carbonate
Which is a weak base?
a) Potassium carbonate
b) Sulfuric acid
c) Ethanoic acid
d) Sodium hydroxide
What is the pH of a 1.0 x 10^-4 mol dm^-3 HCl solution?
a) 1.0
b) 4.1
c) -4
d) 4.0
What is the colour of the solution when Universal indicator is added to pure water at 25 deg cel?
a) Red
b) Purple
c) Green
d) Orange
What is the colour of the solution when Universal indicator is added to a weak acid?
a) Red
b) Yellow
c) Purple
d) Blue
What is the pH of a 1.0 x 10^-4 mol dm^-3 NaOH solution?
a) 10
b) 4
c) 4.1
d) 10.1
Strength of acid affects __.
a) proticity of the acid
b) concentration of the acid
c) amount of base required for complete neutralisation
d) pH of the solution
Which method allows us to distinguish between a strong and weak acid?
a) Titration with a base
b) Test for electrical conductivity using a light bulb
c) Use of blue litmus paper
d) Reaction with Mg strip
Which method does not allow us to distinguish between an acid and an alkali?
a) Test for electrical conductivity using a light bulb
b) Use universal indicator
c) Use pH meter
d) Reaction with ammonium carbonate, followed by gas tests
What's the proticity of sulfuric acid?
a) 1
b) 2
c) 3
d) 4
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