Question

Calculate the percentage by mass of carbon in potassium carbonate k2 co3

Answer 1

Answer:

Potassium carbonate with a chemical formula of K2CO3 has a percent composition of:

1. 47.997 percent Oxygen.
2. 56.58 percent Potassium.
3. 8.69 percent Carbon.

Answer 2

Given: The given compound is $K_2CO_3$.

To find: We have to find the percentage of the mass of carbon.

Solution:

The given compound is $K_2CO_3$.

The atomic mass of K is 39.

The atomic mass of C is 12 and the atomic mass of Oxygen is 16.

The molecular weight of the compound is-

$39 \times 2 + 12 + 3 \times 16 \\ = 138$

The amount of C present is 12 grams.

So, the percentage of the mass of carbon atom is given as-

$\frac{12}{138} \times 100 = 8.69$

The result is 8.69%.

The mass percentage of C is 8.69%.