Tuesday, March 29, 2011

2p06 answer scheme

Observation: A white solid is formed.  It tastes salty.
Conclusion: An acid reacts with an alkali to produce salt and water. 

Exercise
Q1. (a) hydrochloric acid + sodium hydroxide à sodium chloride + water

       (b) HCl + NaOH à NaCl + H2O

Q2. (a) Hydrochloric acid + potassium hydroxide à Potassium chloride + water

       (b) HCl + KOH à KCl + H20

Q3. (a) Hydrochloric acid + calcium hydroxide à Calcium chloride + water

       (b) HCl + CaOH à CaCl + H2O

Q4. (a) nitric acid + sodium hydroxide à sodium nitrate + water

       (b) HNO3 + NaOH à NaNO3 + H2O

Q5. (a) nitric acid + potassium hydroxide à potassium nitrate + water

       (b) HNO3 + KOH à KNO3 + H2O

Q6. (a) sulfuric acid + calcium hydroxide à Calcium sulfate + water


       (b) H2SO4 + CaOH à CaSO4 + H2O


Q7. (a) sulfuric acid + sodium hydroxide à sodium sulfate + water

       (b) H2SO4 + NaOH à NaSO4 + H2O

Q8. (a)sulfuric acid + potassium hydroxide à potassium sulfate + water

       (b) H2SO4 + KOH à KSO4 + H2O


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