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Reactions of Acid. Today’s Lesson. Introduction To Acids Titration Experiment Complete Questions During Experiment. Reactions of Acids. When you react an acid with an alkali (base), you normally have a very simple reaction that occurs:

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Reactions of Acid

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Reactions of Acid

today s lesson
Today’s Lesson
  • Introduction To Acids
  • Titration Experiment
  • Complete Questions During Experiment
reactions of acids
Reactions of Acids
  • When you react an acid with an alkali (base), you normally have a very simple reaction that occurs:
    • Acid + alkali  salt + water
  • This can be seen with a universal indicator. Hydrochloric Acid will turn red as it’s acidic.
  • When you add Sodium Hydroxide (alkali), it goes green as it turns neutral.
  • As more Sodium Hydroxide is added, it will turn blue as there is no more Hydrochloric acid left.
  • Sulfuric Acid + Magnesium Hydroxide  Magnesium Sulfate + Water
  • H2SO4 (aq) + Mg(OH)2 (aq)  MgSO4 (aq)+ 2H2O (l)
  • Nitric Acid + Potassium Hydroxide  Potassium Nitrate + Water
  • HNO3 (aq) + KOH (aq)  KNO3 (aq) + H2O (l)
with metals
With Metals
  • With metals, a salt is also produced but there may also be another byproduct such as a gas.
  • A good example is Magnesium Ribbon in Sulfuric Acid
  • Magnesium + Sulfuric Acid  Magnesium Sulfate + Hydrogen
  • Mg (s) + H2SO4 MgSO4 (aq) + H2 (g)
  • The Magnesium Sulfate can be separated through evaporation.
  • With Carbonates, acids will normally form 3 substances. These substances are a salt, water and Carbon Dioxide.
  • An example is Calcium Carbonate + Hydrochloric Acid  Calcium Chloride + Water + Carbon Dioxide
  • CaCO3 (s) + 2HCl (aq)  CaCl2 (aq) + H2O (l) + CO2 (g)
with bases
With Bases
  • Alkalis are soluble bases.
  • An example is Copper (II) Oxide + Sulfuric Acid  Copper Sulfate + Water
  • CuO (s) + H2SO4 (aq)  CuSO4 (aq) + H2O (l)
  • The salt is Copper Sulfate for this reaction.
  • Acid + Metal Hydroxide  Metal Salt + Water
  • Acid + Metal  Metal Salt + Hydrogen
  • Acid + Metal Carbonate  Metal Salt + Water + Carbon Dioxide
  • Acid + Metal Oxide  Metal Salt + Water
today s lesson1
Today’s Lesson
  • For today, we will be using CC Lemon (acid) and Sodium Hydroxide (NaOH). The Sodium Hydroxide will be 0.1 mol.
  • The CC Lemon will have an unknown molar concentration.
titration basics
Titration Basics
  • We are using Acid Burettes. This means we always use acids in the burette, and use bases/alkali’s in the conical flask
  • Always wash the burette and pipette with the liquid you are using, as this cleans them. For today, we will use CC Lemon.
  • Make sure the tap is closed, and always make sure the glass funnel not fully touching when filling the burette
things to also know
Things to also know
  • You will not be marked on today’s work
  • Today’s work will not be on the test, but is important to know in science
  • Please wear goggles, as both liquids can hurt your eyes
  • When getting close to the end of the titration, slow down the amount of liquid coming out of the tap. This will increase your accuracy.
  • You should complete your questions which completing the experiment today (multi-task – work smarter, not harder!!)
your work
Your Work
  • Please read Page 46/47 and answer Q 1-6 in sentences.