Question

the student takes a piece of nickel metal and places it in sulfuric acid. The solution begins to bubble. The remaining liquid is an ionic solution. What is the gas that is produced?

Answer 1

Answer:

Yes there is a sulphuric acid

Answer 2

The gas that is produced is Hydrogen gas.

• On placing a piece of nickel metal in sulphuric acid (H2SO4), the metal dissolves in acid liberating Ni2+ ions in the solution.
• The Ni2+ ions form a stable coordination complex.
• The Ni2+ is present as the complex ion [Ni(OH2)6]2+. This makes the solution electrically conductive.
• Hydrogen gas is liberated during the process.
• The reaction involved is as follows:

Ni + H2SO4 --> Ni2+ (aq) + H2 (g)