Question

Q7. How much oxygen is required to convert 24g of C to CO,? (Atomic mass of C=12, O=16)​

Answer 1

Answer:

C(s) + O2(g) → CO2(g)

12 g — 32 g — (12+2×16) g =44 g

Atomic mass of carbon =12 g/mol and

Molar mass of of oxygen (2 x16) g/mol = 32 From the above chemical equation we can write,

12 g carbon reacts with 32g O2.

So, 24 g carbon - - - {(32 x 24) /12} g = 64 g O2.

So, to react with 24 g C, required O2 is

(32 x 24 / 12) g = 64 g.

Explanation: