Formula of methanol

Chemical data page This page provides supplementary chemical data on Safety Data Sheet [ ] The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the Safety Datasheet ( Structure and properties [ ] Structure and properties n D 1.328 at 20°C r 32.66 at 20°C 5.3×10 −7 cm 3·g −1 22.5 dyn/cm at 20°C 0.808 mPa·s at 0°C 0.690 mPa·s at 10°C 0.593 mPa·s at 20°C 0.449 mPa·s at 40°C 0.349 mPa·s at 60°C Thermodynamic properties [ ] Phase behavior 175.5 K (−97.7°C), 1.86·10 −1 Pa 513 K (240°C), 78.5 atm of fusion, Δ fus H o 3.1773 kJ/mol of fusion, Δ fus S o 18.1 J/(mol·K) of vaporization, Δ vap H o 37.6 ± 0.5 kJ/mol of vaporization, Δ vap S o 113 J/(mol·K) Solid properties of formation, Δ f H o solid ? kJ/mol S o solid ? J/(mol K) c p ? J/(mol K) Liquid properties of formation, Δ f H o liquid −238.4 kJ/mol S o liquid 127.2 J/(mol K) c H o −715.0 kJ/mol c p 70.8–90.5 J/(mol K) (at −97.6 to 64.7°C) 79.9 J/(mol K) at 20°C Gas properties of formation, Δ f H o gas −201.3 kJ/mol S o gas 239.9 J/(mol K) c p 52.29 J/(mol K) at 77°C 61.43 J/(mol K) at 100–223°C γ = c p/ c v 1.203 at 77°C a = 964.9 L 2 kPa/mol 2 b = 0.06702 liter per mole Spectral data [ ] max ? ? Major absorption bands (liquid film) Wave number transmittance 3347cm −1 6% 3336cm −1 8% 2945cm −1 18% 2833cm −1 22% 2522cm −1 77% 2046cm −1 84% 1460cm −1 47% 1116cm −1 62% 1030cm −1 4% 662cm −1 58% 3.97 ppm, 3.417 ppm 50.05 ppm Other NMR data Masses of main fragments Vapor pressure...

The molecular weight of Methanol (CH 3OH) is 32.0421. To calculate molecular weight of any compound, the first step is to know the constituent atoms and their number in that particular compound. Then calculate the total weight of each atom by multiplying its atomic weight by its number. The sum of total weight of all constituent atoms will be the molecular weight of the compound. Note that the value of atomic weight may differ slightly from different sources. CALCULATION PROCEDURE: Methanol (CH 3OH) Molecular Weight Calculation Step 1: Find out the chemical formula and determine constituent atoms and their number in a Methanol molecule. From the chemical formula, you will know different atoms and their number in a Methanol molecule. Chemical formula of Methanol is CH 4O. From the chemical formula of Methanol, you can find that one molecule of Methanol has one Carbon (C) atom, four Hydrogen (H) atoms and one Oxygen (O) atom. Step 2: Find out atomic weights of each atom (from periodic table). Atomic weight of Carbon (C): 12.0107 (Ref: Atomic weight of Hydrogen (H) : 1.008 (Ref: Atomic weight of Oxygen (O) : 15.9994 (Ref: Step 3: Calculate the total weight of each atom present in a Methanol molecule by multiplying its atomic weight by its number. Number of Carbon atoms in Methanol: 1 Atomic weight of Carbon: 12.0107 Total weight of Carbon atoms in Methanol: 12.0107 x 1 = 12.0107 Number of Hydrogen atoms in Methanol: 4 Atomic weight of Hydrogen: 1.008 Total weight of Hydrogen ...