Question

a substance which dissociate on disolving in water to produce hydrogen ions

Answer 1

hydrochloric acid
The acid illustrated is hydrochloric acid. Pure hydrochloric acid is a gas, but it dissolves easily in water to produce a solution of hydrogen ion and chloride ion. Since nearly all of it is dissociated in water, it is called a strong acid. Acids that do not dissociate completely are called weak acids.

Answer 2

copper and silver and iron I hope it helsp