level: More Mixture
Questions and Answers List
level questions: More Mixture
| Question | Answer |
|---|---|
| What is simple disilation | Separates out a liquid from a solution and also 2 liquids with different boiling points |
| How does it work | 1)Place the solution into the flask 2)Heat the solution which causes the liquid to evaporate turning into a vapor 3)The vapor rises up the glass tube 4)The vapor then passes into the condenser where it turns back to a liquid 5)Collect the liquid in a beaker so at the end we're left with a solid in the flask and liquid in the beaker |
| Why is a thermometer used in simple distillation? | To make sure that the highest boiling point isnt exceeded otherwise both liquids would boil and wouldnt be seperated |
| What is fractional distillation used for | separte a mixture of different liquids with different boiling points |
| Describe a method for making pure crystals of magnesium chloride from magnesium and dilute hydrochloric acid. | 1) Add a fixed volume of hydrochloric acid to the beaker 2) add small pieces of magnesium ribbon until its in excess so all the acid as reacted 3) filter out any excess magnesium using filter paper and funnel 4) add solution to an evaporating basin 5) heat with a bunsen burner until it starts to crytsalise 6) pat dry the crystals on paper towels |