Question

Which of the following is an incorrectly described reaction?

the reaction between aqueous nitric acid and zinc metal to form hydrogen gas and zinc ions and nitrate ions is a redox reaction

the reaction between nitrogen gas and hydrogen gas to form ammonia is a redox reaction

the reaction between aqueous hydroxide ion and aqueous calcium ion to form solid calcium hydroxide is a precipitation reaction

the reaction between calcium metal and fluorine gas to form solid calcium fluoride is a precipitation reaction

the reaction between aqueous hydrochloric acid and sulfate ion to form the hydrogen sulfate ion and chloride ion is an acid-base reaction

Answer 1

1st reaction is incorrect because zinc metal did not displace sodium ..this is because sodium lie up of the reactivity series....
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