In the core practical ‘Carrying out a titration’, you will find out how much acid is needed to completely react with a known volume of alkali. What is the name of the apparatus that is used to add small measured amounts of the acid to the alkali?Conical flaskMeniscusBurettePipette2What is the correct way to read the volume in the burette at the end of the titration?At the top of the buretteAt the top of the meniscusAt the bottom of the buretteAt the bottom of the meniscus3Why is phenolphthalein a good indicator for a titration between an acid and an alkali?Because it is acidicBecause it is alkalineBecause it has a clear colour change between acid and alkaliBecause it is neutral4How should you record the results of your titres?To one decimal place of any numberTo one decimal place where the number is always 0 or 5To two decimal places where the second decimal place can be any numberTo two decimal places where the second decimal place is always 0 or 55You should keep repeating titres until you get concordant results. What does this mean?Two or more results must be within 0.5 cm3 of each otherTwo or more results must be within 1 cm3 of each otherTwo or more results must be within 0.1 cm3 of each otherThree or more results must be within 0.1 cm3 of each other6Three titres are calculated as follows: 24.50 cm3, 24.45 cm3, 24.55 cm3. What is the mean titre?24.55 cm324.5 cm373.5 cm324.45 cm3