Question

In every chemical reaction of a substance X, the mass of the product formed is greater than the mass of X taken for the reaction. What kind of substance is X?

Answer 1

Answer:

• Here the substance X is an element.
• This is because when an element undergoes a reaction, it changes into a compound.
• So the mass of the compound formed by that element is greater than the mass of the element.

For Example, Carbon reacts with oxygen and burns :

$$\begin{gathered} \mathrm{C}\left(\mathrm{s}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{CO}}_2\left(\mathrm{g}\right) \\ \mathrm{Carbon}\mathrm{Oxygen}\mathrm{Carbon}\mathrm{dioxide} \\ \mathrm{Mass}\mathrm{of}\mathrm{Carbon}=12\mathrm{amu}. \\ \mathrm{Mass}\mathrm{of}\mathrm{product}\left({\mathrm{CO}}_2\right)=44\mathrm{amu} \end{gathered}$$

The mass of product is greater than the mass of element. .