Reactions Of Acids- Titrations

Question 1

What does a titration measure?

Answer 1

A titration can be used to measure the volumes of acid and alkali that react wih
each other.

Question 2

What is a pipette used for?

Answer 2

A pipette is used to measure a fixed volume of a solution.

Question 3

what is a burette used for?

Answer 3

A burette is used to obtain an accurate measurements of the volume of the
solution added.

Question 4

An acid / base indicator with a _____ end point eg p______________, is used.

Answer 4

An acid / base indicator with a sharp end point eg phenolphthalein, is used.

Question 5

Results are repeated until you have 2 __________ results and a ____ is calculated.

Answer 5

Results are repeated until you have 2 concordant results and a mean is calculated.

Question 6

A ______ acid is completely _______ in aqueous solutions.

Answer 6

A strong acid is completely ionised in aqueous solutions.

Question 7

list three examples of strong acids

Answer 7

Hydrochloric, nitric and sulphuric acids are strong acids.

Question 8

____ acids only partially ionise in _______ solutions.

Answer 8

Weak acids only partially ionise in aqueous solutions.

Question 9

list three examples of weak acids

Answer 9

Ethanoic, citric and carbonic
acids are weak acids.

Question 10

The ________ the acid the lower the __.

Answer 10

The stronger the acid the lower the pH.

Question 11

As the pH decreases by ___ unit, the hydrogen ion _____________ increases by a
factor of __.

Answer 11

As the pH decreases by one unit, the hydrogen ion concentration increases by a
factor of 10.

Question 12

pH 1 = ______ ion concentration of 0.1 mol/dm 3 , pH _ = 0.01mol/dm 3 and so on

Answer 12

pH 1 = hydrogen ion concentration of 0.1 mol/dm 3 , pH 2 = 0.01mol/dm 3 and so on