# Establish the formula of formic acid if it is known that the mass ratio of hydrogen, carbon and oxygen

Establish the formula of formic acid if it is known that the mass ratio of hydrogen, carbon and oxygen in it is 1: 6: 16

Given:
CxHyOz
m (C in CxHyOz): m (H in CxHyOz): m (O in CxHyOz) = 6: 1: 16

Find:
CxHyOz -?

Solution:
1) Let m (CxHyOz) = 23 r;
2) m (C in CxHyOz) = 6 g;
3) n (C in CxHyOz) = m (C in CxHyOz) / M (C) = 6/12 = 0.5 mol;
4) m (H in CxHyOz) = 1 g;
5) n (H in CxHyOz) = m (H in CxHyOz) / M (H) = 1/1 = 1 mol;
6) m (O in CxHyOz) = 16 g;
7) n (O in CxHyOz) = m (O in CxHyOz) / M (O) = 16/16 = 1 mol;
8) x: y: z = n (C in CxHyOz): n (H in CxHyOz): n (O in CxHyOz) = 0.5: 1: 1 = 1: 2: 2;
9) Formic acid formula – CH2O2.

Answer: The formula of formic acid is CH2O2. One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.