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2 Written questions

2 Multiple choice questions

  1. - proton donor/produces H+/H3O+ ions
    Eg. 2HCl(aq) + Mg(s) -> MgCl2(aq) + H2(g)
    - SOUR
    - conducts electricity
    - reacts with metals to produce hydrogen gas
    - turns BLUE litmus paper RED
  2. - used to measure the acidity/alkalinity of a substance
    - ranges from 0 (most acidic) to 14 (most basic)
    - each pH unit represents a tenfold change in the concentration of H+, thus pH 2 has 10x as many H+ prtons as pH 3.

1 True/False question

  1. Bases- substances that resist changes in pH
    - optimum blood pH of 7.4 (slightly basic) +/-0.05
    - eg. carbonic - bicarbonate base pair in blood
    -eg. If a person's blood gets acidic (has extra H+ ions), HCO3(bicarbonate) ions react with the surplus H+ ions

          

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