C6
- Created by: superlouasaur
- Created on: 16-03-15 16:26
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- C6- chemical synthesis
- How chemicals are made
- Bulk chemical- made on a large scale
- eg. Sulphuric acid
- Fine chemicals- made on a small scale
- eg. new drugs
- Sulphuric acid
- Used in explosives, metal treatment and paint
- The reactants go to the furnace, converter and absorbtion tower
- Bulk chemical- made on a large scale
- Word equations
- Metal(s)+ acid(aq)-> Salt (aq)+ hydrogen (g)
- Metal Oxide(s)+ Acid(aq)-> Salt(aq)+ Water(l)
- Metal hydroxide(s)+ Acid(aq)-> Salt(aq)+ carbon dioxide(g) +water
- Metal Carbonate (s)+ Acid (aq) -> Salt(aq)+ Carbon dioxide(g)+ Water
- Sulphuric acid- sulphate Hydrochloric acid- Chloride Nitric acid- nitrate
- Endothermic and exothermic reactions
- Exothermic - Heat energy is given out (warm)
- Endothermic- Heat energy is taken in (cold)
- Only transferred energy, not destroyed
- Rates of reactions
- Lots of small pieces of marble pieces react quicker and create more CO2 than bigger pieces.
- More surface area for the chemicals to react with
- Lots of small pieces of marble pieces react quicker and create more CO2 than bigger pieces.
- Iodine clock
- If the substances are heated then the reaction rate will increase because the substances will have more energy
- Working out concentration
- Precision- how detailed measurements are
- Accuracy- whether the results are correct/ follow the expected pattern
- Repeatability-is whether the range bars are small and the results overlap
- Relative atomic+ formula mass
- Mr= relative molecular mass
- Add up atomic mass number for a compound
- Yields
- Desiccator- removes all the water from a compound and dries crystals out completely
- Percentage yield= actual yield/ theoretical yield x100
- How chemicals are made
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