Question

the chemical formula of rust is.. a) Fe2 O3 b) FE3 O3.x H2O c) FECO3.x H2O​

Answer 1

Answer:

b) $Fe_{3} O_{3}.XH_{2}O$

Explanation:

In the first option, $H_{2}O$ is not there and in the third option, we don't require Carbon!