PRACTICAL

Question 1

Draw distillation apparatus

Answer 1

Question 2

Draw reflux apparatus

Answer 2

Question 3

Describe the stages of the distillation of an aldehyde from an alcohol

Answer 3

Question 4

How do you calculate if you experiment was accurate?

Answer 4

If the experimental error is SMALLER than apparatus error, then you have accurate results

Question 5

How do you calculate experimental error (a percentage)

Answer 5

= 100× (real answer - experiment answer) / real answer

Question 6

what do you use to filter a desired solid product

Answer 6

Buchner Funnel

Question 7

How do you purify a substance by recrystillization

Answer 7

Dizzolve substance, including impurities in hot solvent. It should be soluable in hot holvent and less soluable in cold solvent so that only our desired product recrystillizes. Use hot glasswear so it doesn’t crystallize in apparatus.

Question 8

In a concentration rate graph, which axis is which?

Answer 8

Rate : Y

Concentration : X

Question 9

In a concentration time graph, which axis is which?

Answer 9

Concentration: Y

Time: X

Question 10

Which axis is which on an absorbtion concentration graph

Answer 10

Question 11

How do you purify via recrystillization (4)

Answer 11