Flashcards covering all the Year 12 Chemistry (AQA) A Level Content
| Front | What is the Equation for Enthalpy of Reaction, using Enthalpy of Formation? |
| Back | ΔrH° = ∑ΔfH° (products) - ∑ΔfH° (reactants) |
| Front | What are the positives and negatives of Water treatment with Chlorine? |
| Back | Pros:-It kills disease-causing microorganisms.-Some Chlorine stays in the water and prevents reinfection downstream.-It prevents the growth of algae, eliminating discolouration, bad smells and tastes.Cons:-Chlorine Gas is very harmful and causes respiratory irritation if breathed in.-Chlorine can react with organic compounds to form Chlorinated Hydrocarbons which are carcinogenic. |
| Front | What is the method for removing Sulfur Dioxide from being released into the atmosphere after Fossil Fuel burning? |
| Back | You can remove Sulfur Dioxide impurities with a method called Wet Scrubbing, where you react the impurities with an Alkali. This can either be powdered Calcium Oxide or Calcium Carbonate. A slurry can be made by mixing both of the both with Water and spraying it at the flue gases, producing a product of Caclium Sulfite. |