Titrations

Question 1

what is a pipette

Answer 1

a glass tube with a line which accurately measures 25cm^3

Question 2

what is a burette

Answer 2

a calibrated glass tube from which a solution can be added drop by drop

Question 3

what indicator do we use in titrations

Answer 3

phenolphthalein

Question 4

what colour does phenolphthalein turn acid

Answer 4

colourless

Question 5

what colour does phenolphthalein turn in alkali conditions

Answer 5

bright pink

Question 6

what is the titration calculation

Answer 6

(M1xV1)/N1 = (M2xV2)/N2 where:
•M1= conc. of acid                M2= conc. of alkali
•V1= volume of acid used      V2= volume of alkali used
•N1= no. of moles of acid      N2= no. of moles of alkali

Question 7

what is a titration

Answer 7

a very accurate way of doing neutralisation reactions to find unknown conc. of acid or alkali