Question

Fill in the blanks using the appropriate words given below:

(Sulphur dioxide, Nitrogen dioxide, Nitric oxide, Sulphuric acid)

Hot, concentrated nitric acid reacts with sulphur to form ___.

Answer 1

1. Hot, concentrated nitric acid$\left({\mathrm{HNO}}_3\right)$ reacts with many non-metals like sulphur$\left(\mathrm{S}\right)$, carbon$\left(\mathrm{C}\right)$ etc. For example, it reacts with sulphur$\left(\mathrm{S}\right)$ to form sulphuric acid $\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$, water and nitrogen dioxide$\left({\mathrm{NO}}_2\right)$.
2. So, Hot, concentrated nitric acid reacts with sulphur to form Nitrogen dioxide.
3. $$\begin{gathered} \mathrm{S}+6{\mathrm{HNO}}_3\to {\mathrm{H}}_2{\mathrm{SO}}_4+2{\mathrm{H}}_2\mathrm{O}+6{\mathrm{NO}}_2­ \\ \left(\mathrm{Sulphur}\right)(\mathrm{Nitrogen} \\ \mathrm{dioxide}) \end{gathered}$$