Titrations

Question 1

What are some possible errors in a titration?

Answer 1

Leaving in filter funnel
Bubble under tap
Usage of conical flask
Not swirling constantly 
Not washing sides of conical flask just before the end

Question 2

How would leaving the filter funnel in affect the titration?

Answer 2

Liquid may drop which would lower the final titre volume

Question 3

How much a bubble in the two affect the titration

Answer 3

Liquid will fill that space before being added to conical flask so the final titre volume is increased

Question 4

How will a conical flask affect a titration?

Answer 4

Liquid isn’t lost during swirling

Question 5

How will not swirling constantly affect the titration?

Answer 5

Chemicals not fully mixed will increase the final titre volume

Question 6

How will washing the sides of a conical flask before the end affect a titration?

Answer 6

Splash backs may leave reagents on the side and not in mixture,
Washing with distilled water (which doesn’t change moles of reactant) will increase the final titre volume

Question 7

How do you calculate uncertainty in a titration?

Answer 7

(Error value/quantity measured) x 100

Question 8

How does a dilution work?

Answer 8

Adding water to a solution will change its volume and concentration but the number of moles of the original chemical stays the same so
Moles = conc x volume (start) = conc x volume (end)