Titration, Reaction Of Acids Flashcards
(24 cards)
What is a titration?
An experiment to find the volume of acid or alkali needed to exactly neutralise the other.
What type of reaction is a titration?
A neutralisation reaction.
What equipment is used in a titration?
Burette, pipette, conical flask, clamp stand, white tile.
What indicator is used in strong acid–strong alkali titrations?
Phenolphthalein or methyl orange.
Why is a single indicator used in titration?
To show a sharp, clear colour change at the endpoint.
What does phenolphthalein look like in acid and alkali?
Colourless in acid, pink in alkali.
What does methyl orange look like in acid and alkali?
Red in acid, yellow in alkali.
Why is a white tile used in titrations?
To make the colour change easier to see.
What does the burette measure?
The volume of acid or alkali added to the flask (in cm³).
What is the pipette used for?
To accurately measure a fixed volume of solution.
What is the end point of a titration?
The point at which the acid and alkali have completely reacted (neutralisation).
What is the general equation for acid + metal?
Acid + Metal → Salt + Hydrogen gas.
What is the test for hydrogen gas?
A lit splint makes a squeaky pop.
What is the general equation for acid + metal oxide?
Acid + Metal Oxide → Salt + Water.
What is the general equation for acid + metal hydroxide?
Acid + Metal Hydroxide → Salt + Water.
What is the general equation for acid + metal carbonate?
Acid + Metal Carbonate → Salt + Water + Carbon Dioxide.
What is the test for carbon dioxide?
Bubble it through limewater; it turns cloudy.
What salt is formed with hydrochloric acid?
A chloride salt.
What salt is formed with sulfuric acid?
A sulfate salt.
What salt is formed with nitric acid?
A nitrate salt.
What type of reaction is acid + base?
Neutralisation.
What is the purpose of titration calculations?
To find unknown concentrations using the volumes and known concentrations.
What is the formula for concentration in titration?
Concentration (mol/dm³) = Moles ÷ Volume (dm³).
How do you calculate moles in titration?
Moles = Concentration × Volume (in dm³).
