Molar Mass of CH₃COOH
Acetic acid (ethanoic acid, C₂H₄O₂). The acid in vinegar. Its Ka is about 1.8 × 10⁻⁵, which makes it a weak acid.
Molar mass of CH3COOH
60.052 g/mol
2 × 12.011 + 4 × 1.008 + 2 × 15.999 = 60.052
Calculation, element by element
| Element | Atoms | Atomic mass (g/mol) | Subtotal | Mass % |
|---|---|---|---|---|
| Carbon (C) | 2 | 12.011 | 24.022 | 40.00% |
| Hydrogen (H) | 4 | 1.008 | 4.032 | 6.71% |
| Oxygen (O) | 2 | 15.999 | 31.998 | 53.28% |
| Total | 60.052 | 100% |
= 0.16652 mol = 1.0028 × 1023 formula units
CH₃COOH molar mass FAQ
What is the molar mass of acetic acid (CH₃COOH)?
60.052 g/mol. It is the sum of the atomic masses of every atom in the formula: 2 × 12.011 + 4 × 1.008 + 2 × 15.999 = 60.052 g/mol.
How many grams are in one mole of CH₃COOH?
60.052 g. Molar mass is the mass of one mole (6.022 × 10²³ formula units), so 1 mol of CH₃COOH weighs 60.052 g and 0.5 mol weighs 30.026 g.
How many moles are in 10 g of CH₃COOH?
10 g ÷ 60.052 g/mol = 0.1665 mol.
What is the percent composition of CH₃COOH?
Carbon 40.00%, Hydrogen 6.71%, Oxygen 53.28%.
Is molecular weight the same as molar mass for CH₃COOH?
Numerically yes: the molecular (or formula) weight is 60.052 u per formula unit, and the molar mass is 60.052 g/mol.
Molar masses of other common compounds
H2O WaterNaCl Sodium chlorideNaOH Sodium hydroxideC6H12O6 GlucoseCO2 Carbon dioxideHCl Hydrochloric acidH2SO4 Sulfuric acidO2 Oxygen gasCaCO3 Calcium carbonateC2H5OH EthanolNH3 AmmoniaN2 Nitrogen gasCH4 MethaneCuSO4 Copper(II) sulfateKMnO4 Potassium permanganateMgCl2 Magnesium chlorideCuSO4·5H2O Copper(II) sulfate pentahydrateNaHCO3 Sodium bicarbonateNa2CO3 Sodium carbonateKCl Potassium chlorideHNO3 Nitric acidH3PO4 Phosphoric acidC12H22O11 SucroseH2O2 Hydrogen peroxideCa(OH)2 Calcium hydroxideFe2O3 Iron(III) oxideAl2O3 Aluminium oxideAgNO3 Silver nitrateNH4NO3 Ammonium nitrateC8H10N4O2 CaffeineC9H8O4 AspirinC3H8 PropaneC8H18 OctaneH2 Hydrogen gasCl2 Chlorine gasO3 OzoneCO Carbon monoxideSO2 Sulfur dioxideKOH Potassium hydroxideMgO Magnesium oxideCaCl2 Calcium chlorideNaNO3 Sodium nitrateK2Cr2O7 Potassium dichromateBaSO4 Barium sulfate