A shiny brown-coloured element ' $X$ ' on heating in air becomes black in colour.

Question.
A shiny brown-coloured element ' $\mathrm{X}$ ' on heating in air becomes black in colour. Name the element ' $\mathrm{X}^{\prime}$ and the black coloured compound formed.

solution:
$' X^{\prime}$ is copper $(\mathrm{Cu})$ and the black-coloured compound formed is copper oxide $(\mathrm{CuO})$. The equation of the reaction involved on heating copper is given below.

A shiny brown-coloured element

Leave a comment

Close

Click here to get exam-ready with eSaral

For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.

Download Now