Acid reactions. Experiment: Safety! Wear, safety glasses Stand up Do not spill the liquid. Do not touch the flame. 1. Fill up to 5cm 3 with the acid.

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Presentation transcript:

Acid reactions

Experiment: Safety! Wear, safety glasses Stand up Do not spill the liquid. Do not touch the flame. 1. Fill up to 5cm 3 with the acid. 2. Add 2 spatulas of the carbonate 3. Pour the gas (only) onto the flame carefully.

Experiment 1 reactants: Acetic acid (CH3COOH), Sodium Bicarbonate (NaHCO₃) Experiment 2 reactants: Sulphuric Acid (H 2 S0 4 ), Calcium Carbonate (CaCO 3 ) 1.Write the generalised equation for the reactions that took place. 2.Write the word and symbol equations for the reactions that took place. 3.Add the states to the reactants and products in each equation.

QUESTIONSHEET 9 (a) (i) 12 (ii) Lemon juice (iii) 7 (b) red or orange (c) (i) accept any pH greater than 7 up to 14 (ii) neutralisation (iii) water QUESTIONSHEET 10 (a)green (b)(i) neutralisation (ii) reaction is faster/increases rate of the reaction. increases surface area/more collisions between particles (c)(i)2 CO 2 (ii) turns milky/white/cloudy (iii) (16 x 3) = 84

Common AlkaliSalt is called Common AcidSalt is called Sodium hydroxideSodium… Sulphuric Acid… sulphide Potassium hydroxide Potassium… Nitric Acid… nitrate Calcium hydroxideCalcium… Hydrochloric Acid… chloride 1.Sodium hydroxide + hydrochloric acid  Sodium chloride +___________________ 2. Sodium hydroxide +nitric acid  ______________________________________ 3. Sodium hydroxide +  sodium sulphide + water___________ 4. Lithium oxide + hydrochloric acid  _______________________________________ 5. Calcium oxide + nitric acid  _____________________________________________ 6. Magnesium oxide + sulphuric acid  ______________________________________ 7. Calcium + hydrochloric acid  ____________________________________________ 8. Sodium + sulphuric acid  _______________________________________________ 9. Potassium + nitric acid  ________________________________________________ 10. Hydrochloric acid + iron carbonate  _____________________________________ 11.  calcium chloride + water + carbon dioxide 12.  sodium chloride + water + carbon dioxide 13.  sodium chloride + water______________ 14.  potassium nitrate + water____________ water Sodium nitrate + water Sulphuric acid Lithium chloride + water Calcium nitrate + water Magnesium sulphide + water Calcium chloride + Hydrogen Sodium Sulphide + Hydrogen Potassium nitrate + Hydrogen Iron chloride + carbon dioxide + water Hydrochloric Acid + Calcium carbonate Hydrochloric Acid + Sodium carbonate Hydrochloric Acid + Sodium hydroxide Nitric Acid + Potassium hydroxide

Across 2. Salts formed with hydrochloric acid (9) 3. A metal compound also containing carbon and oxygen (9) 4. Evidence that a gas has been produced (7) 6. A product of an acid plus carbonate (5) 7. The type of acid that forms sulphate salts (9) 9. Salts formed with Nitric acid (7) 10. A product of an acid plus carbonate which turns lime water milky (6,7) 11. A gas which extinguishes a flame with a squeaky pop (8) Down 1. An acid + Base reaction (14) 5. A soluble alkali (4) 8. An acid plus this gives a salt and hydrogen (5)