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Classify aqueous solutions of the following substances according to their pH into three groups : 7, more than 7, less than 7.

Common salt, sodium acetate, hydrochloric acid, carbon dioxide, potassium bromide, calcium hydoxide, ammonium chloride, vinegar, sodium carbonate, ammonia, sulphur dioxide.

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Substances  pH Value
Common salt equal to 7
Sodium acetate greater than 7
Hydrochloric acid less than 7
Carbon dioxide less than 7
Potassium bromide equal to 7
Calcium hydroxide greater than 7
Ammonium chloride less than 7
Vinegar less than 7
Sodium carbonate greater than 7
Ammonia greater than 7
Sulphur dioxide less than 7

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