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 Form 2 Chemistry questions and answers on salts

When dilute hydrochloric acid was reacted with solid B, a colourless gas which extinguished a burning splint was produced. When an aqueous solution of solid B was tested with a blue litmus paper, the paper turned red/pink.
(a) Identify an ion present in solid B
(b) Write an ionic equation for the reaction between solid B and dilute hydrochloric acid.

 (2m 11s)
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