Chemistry 1.7 - Acids and Bases

• What does a double arrow mean?

  The reaction is reversible
• If the concentration is acidic?

  H > OH
• If the concentration is neutral?

  H = OH
• If the concentration is alkaline?

  H < OH
• Hydrochloric acid formula?

  HCl
• Nitric acid formula?

  HNO3
• Sulphuric Acid formula?

  H2SO4
• All acids contain the H+ ion

  All alkalis contain the OH- ion
• Hydrogen gas test?

  burns with a squeaky pop
• Metal oxides dissolve in water to produce acidic solutions
• Non metal oxides dissolve in water to produce alkaline solutions
• carbon dioxide test?

  turns lime water cloudy
• oxygen test?

  relights a glowing splint
• Metal oxide + water -> metal hydroxide
• acid + alkali -> salt + water
• acid + metal oxide -> salt + water
• acid + metal carbonate -> salt + water + carbon dioxide
• What is titration?

  A test performed to find out the concentration of a reactant by reacting it with a known reactant
• What apparatus do you need for titration?

  Burette, clamp stand, titration flask
• What are concordant results?

  Results within 0.2 of eachother
• What indicator would you generally use for titration?

  Phenothalein
• Why would you use a white tile under the conical flask in titration?

  To see the color change clearly
• Why are concordant results needed?

  So the test is more accurate
• Why must you read the burette at eye level?

  Accuracy