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8 Cards in this Set
- Front
- Back
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Describe a process to make pure,dry crystals of salt from a metal oxide and dilute acid |
-Add acid to beaker -Warm acid -Add metal oxide -Stir -Continue adding untill metal oxide is in excess
-Filter, using filter paper and funnel -To remove excess metal oxide
-Heat solution in evaporating basin to crystallisation point -Leave to crystallise -Pat with filter paper |
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Why do alkene batteries eventually stop working |
The reactant/electrolyte is used up |
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Why are alkene batteries not rechargeable |
Reaction is not reversable |
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Why cannot electrolysis happen with a solid electrolyte |
-Electrolyte is solid -So ions cannot move |
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How should the apparatus be changed, with reason |
-Use a measuring cylinder -To measure volume of gas |
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Describe trend |
-Hydrogen increased at a constant rate -Chlorine did not increase at a constant rate -Collection rate of chlorine accelerated |
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Why would titanium chloride not be expected to be liquid at room tempreture |
-Metal chlorides are ionic -So high melting point -Because strong forces between ions |
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Why can an acid be both strong and dilute |
-Strong = Completely ionised in aqueous solution -Dilute = Small amounts of acid per unit volume |
