CH-1589
Reactivity series
Chemistry · Secondary 4 · Medium · Reactivity series
Gold is found mixed with compounds of lead in an ore. The ore is treated with dilute hydrochloric acid to remove lead compounds. Why does gold remain unchanged?
- Gold is above hydrogen in the reactivity series.
- Gold is an alloy and alloys do not react with acids.
- Gold is below hydrogen in the reactivity series and does not react with dilute acids.
- Gold reacts but the products are colourless and not seen.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.