Which metal oxide, when heated produces a silvery-white mirror on the side of the test tube?

Open in App

Solution

The thermal decomposition of Mercuric Oxide (HgO), a metal oxide will result in the production of Mercury(Hg) and Oxygen gas(O₂).
$\underset{Mercuric Oxide}{2 HgO (s)} \overset{heat}{\to} \underset{Mercury}{2 Hg (l)} + \underset{Oxygen}{O_{2} (g)}$
Because of the mercury silvery-white mirror on the side of the test tube is observed.
Hence, Mercuric oxide (HgO), when heated produces a silvery-white mirror on the side of the test tube.

Suggest Corrections

Similar questions

Silvery grey iron fillings are added to yellow sulphur powder in a test tube. The contents of the test tube were strongly heated until they glow red. On cooling it forms a grey dull solid. Which statement is correct about the contents of the test tube in the experiment?

White silvery metals that melts , when kept on the palm is ________ & ________

A compound X on heating produce a colorless gas Y and metal oxide Z. The metal oxide is yellow when hot and show white color when it is cooled. Identify X, Y and Z?

A ribbon of silvery-white element when heated in a flame burns with a dazzling white light and leaves a white powder. The white powder when dissolved in water turns red litmus blue. Answer the following:

Identify the element and the white powder obtained on its burning.

Q. What happens when mercuric oxide is heated in a clean and dry test tube?

Join BYJU'S Learning Program