EASY
Earn 100

The taste of base is . (Sweet/Bitter)

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Important Questions on Acids, Bases and Salts

EASY
The chemical formula of ammonium hydroxide is-
MEDIUM
NH3 gas can be dried by passing it over:
MEDIUM

What is an alkali? Do basic solutions also have H+(aq) ions? If yes, then why are these basic? 

MEDIUM
Which of the following is a dibasic acid?
MEDIUM
While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid?
MEDIUM
Dry hydrogen chloride gas does not change the colour of dry litmus paper. Why ?
EASY
Which of the following phenomena occur, when a small amount of acid is added to water?
HARD
With the help of labelled diagrams, describe an activity to show that acids produce ions only in aqueous solutions.
MEDIUM
How is the concentration of hydronium ions (H3O+) affected when the solution of an acid is diluted?
MEDIUM
Do basic solutions also have H+(aq) ions? If yes, then why are they basic?
HARD
Why do acids not show acidic behaviour in the absence of water?
MEDIUM
HCl and HNO3 show acidic characters in aqueous solution while alcohol and glucose solutions do not. Give reason.
HARD
Compounds such as alcohol and glucose also contain hydrogen but are not categorised as acids. Describe an activity to prove it.
HARD
While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid?
EASY
What type of ions are formed:
(i) when an acid is dissolved in water?
(ii) when a base (or alkali) is dissolved in water?
HARD
How is the concentration of hydroxide ions OH- affected when excess base is dissolved in a solution of sodium hydroxide?
MEDIUM
While diluting a mineral acid why is it recommended to add acid slowly to water and not water to acid. Explain.
HARD
Why does dry HCl gas not change the colour of dry litmus paper?
HARD
Why do HCl,H2SO4,HNO3, etc., show acidic character in aqueous solutions while solutions of compounds like C6H12O6 (glucose) and C2H5OH (alcohol) do not show acidic character?