add the metal oxide or carbonate to a warm solution of acid until no more will react
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step two
filter the excess metal oxide or carbonate to leave a solution of the salt.
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step three
gently warm the salt solution so that the water evaporates and crystals of salt are formed.
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hazards and risks
corrosive acid can cause damage to eyes, so eye protection must be used. hot equipment can cause burns, so care must be taken when the salt solution is warmed.
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strong acids
are completely ionised in water. hydrochloric acid is a strong acid.
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