Chemistry
Hydrogen is evolved when dilute HCl reacts with magnesium, but nothing happens in the case of mercury and silver. Explain.
Related Questions
Why are the following metals not used in the lab. preparation of hydrogen?
(a) calcium
(b) iron
(c) aluminium
(d) sodium
Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity: Iron, sodium, magnesium, zinc, calcium.
Steam can react with a metal and a non-metal to liberate hydrogen. Give the necessary conditions and equations for the same.
Hydrogen is obtained by displacement from
(a) dilute sulphuric acid
(b) dilute hydrochloric acid
Write equations using zinc and iron.
Why does not copper show similar behaviour?