titration

Question 1

what do we use to work out the concentration of the acid

Answer 1

• we know the volume and conc. of the alkali
• we know how much is needed to neutralise the acid
• we need to know the volume of the acid

Question 2

how much sodium hydroxide should we add to the conical flask

Answer 2

-25cm3 of sodium hydroxide to the conical flask–pipette

Question 3

what do we need to do to see the colour change more clearly

Answer 3

place the conical flask on the white tile

Question 4

what do we use to put the sulfuric acid in

Answer 4

a burette

Question 5

when do you stop adding acid

Answer 5

until it is neutral

Question 6

what is it important to do when reading from the burette

Answer 6

read from the bottom of the meniscus