The organic substance easily reduces the ammonia solution of silver oxide and contains 62.0% hydrogen

The organic substance easily reduces the ammonia solution of silver oxide and contains 62.0% hydrogen, 27.6% oxygen, 10.4% hydrogen. determine the structural formula of a substance

Solution: we denote organic matter schematically: CxHyOz
Let us determine the molar mass of a substance, taking into account the mass fractions of the content of carbon, oxygen, hydrogen:

M (CxHyOZ) = 62 + 27.6 +10.4 = 100 g / mol,
Let’s calculate the number of moles of C, H, O according to the formula:
Y (C) = m / M = 62/12 = 5.16 mol;
Y (O) = m / M = 27.6 / 16 = 1.72 mol;
Y (H) = m / M = 10.4 / 1 = 10.4 mol.
Ratio:
C: H: O = X: Y: Z = 5, 16: 1, 72: 10, 4 = 3: 1: 6 (divide by the smallest number 1.72)
Molecular Formula:
С3Н6О – propionic aldehyde participates in the qualitative reaction of the “silver mirror”
Answer: Structural formula of propanal СН3 – СН2 – СОН