titration practical

Question 1

what is the purpouse of this practical

Question 2

the bottom of the……… should be at the …….. mark

Answer 2

meniscus
25cm3 mark

meniscus spelt right hole point of question

Question 2

how do you make standard solution with NaHCO3

Answer 2

weigh 2.1g of sodium hydrogencarbonate into a weighing boat then transfer into a 250cm3 beaker

add a small volume of distilled water to the beaker and stir till solid dissolves

transfer the solution to a 250cm3 volumetric flask

rinse the beaker with a glass rod with distilled water and add washings to volumetric flask

fill volumetric flask up to graduation mark

Question 3

what is the uncertainty of a burette

Answer 3

0.05 cm3