Ncert Exercises & Solutions

6.19 How is leaching carried out in case of low grade copper ores?

NEETprep Answer: In case of low grade copper ores, leaching is carried out using acid or bacteria in the presence of air. In this process, copper goes into the solution as

C u^{2 +}

ions.

$C u_{(s)} + 2 H_{(a q)}^{+} + \frac{1}{2} O_{2 (g)} \to C u_{(a q)}^{2 +} + 2 H_{2} O_{(I)}$

The resulting solution is treated with scrap iron or H2 to get metallic copper.

$C u_{(a q)}^{2 +} + H_{2 (g)} \to C u_{(s)} + 2 H_{(a q)}^{+}$

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions