Titrations

Question 1

What is the first step in the titration process?

Answer 1

Use the pipette to add 25 cm3 of alkali to a clean conical flask.

Question 2

What should be added to the alkali in the conical flask?

Answer 2

Add a few drops of indicator and put the conical flask on a white tile.

Question 3

What is the third step in the titration process?

Answer 3

Fill the burette with acid and note the starting volume.

Question 4

How should the acid be added to the alkali?

Answer 4

Slowly add the acid from the burette to the alkali in the conical flask, swirling to mix.

Question 5

When should you stop adding acid during titration?

Answer 5

Stop adding the acid when the end-point is reached, indicated by a color change.

Question 6

What should you do after reaching the end-point?

Answer 6

Note the final volume reading, and calculate how much acid you added in total.

Question 7

What does ‘concordant results’ mean in titration?

Answer 7

Volumes of acid that are within 0.10 cm3 of each other.

Question 8

What should you do with the concordant results?

Answer 8

Use the concordant results to calculate the mean volume of acid required to neutralise the alkali.

Question 9

Percentage yeild

Answer 9

Percentage yeild = (atcual yeild/ theriotical yeild) x 100

Question 10

atom econmy

Answer 10

AtomEconomy=(
TotalRFMofAllReactants
RelativeFormulaMass(RFM)ofDesiredProduct
​
)×100