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Chemistry
Paper 2 (Section 3)
| Question | Answer |
|---|---|
| What is 1dm³ in cm³? | 1000cm³ |
| What is the formula for concentration? | Concentration = number of moles/volume of solution |
| What is the molar volume of any gas at room temperature? | 24dm³ |
| What is the formula for volume of a gas? | Volume (dm³) = moles x 24 |
| What is electrolysis? | The breaking down of a substance using electricity |
| What is the name of the liquid in the beaker during electrolysis? | The electrolyte |
| What property does carbon have that makes it a good substance to make electrodes out of and why? | It's inert, meaning it won't take place in the reaction |
| In electrolysis, why does the compound you're trying to separate need to be molten or dissolved? | So that the ions are free to move around to different electrodes |