determine the molar mass for ethyl alcohol c₂h₅o\na) 460.02 grams/mole\nb) 61 gram/mole\nc) 45.0…

determine the molar mass for ethyl alcohol c₂h₅o\na) 460.02 grams/mole\nb) 61 gram/mole\nc) 45.0 grams/mole\nd) 46.01 grams/mole\ne) 60.2 grams/mole

determine the molar mass for ethyl alcohol c₂h₅o\na) 460.02 grams/mole\nb) 61 gram/mole\nc) 45.0 grams/mole\nd) 46.01 grams/mole\ne) 60.2 grams/mole

Answer

Explanation:

Step1: Identify atomic masses

Atomic mass of C = 12.01 g/mol, H = 1.01 g/mol, O = 16.00 g/mol.

Step2: Calculate molar - mass of C₂H₅O

There are 2 C atoms, 5 H atoms and 1 O atom in C₂H₅O. Molar mass = (2×12.01)+(5×1.01)+16.00 = 24.02 + 5.05+16.00 = 45.07 g/mol (close - value approximation). The more accurate formula for ethyl alcohol is C₂H₅OH. For C₂H₅OH: There are 2 C atoms, 6 H atoms and 1 O atom. Molar mass = (2×12.01)+(6×1.01)+16.00 = 24.02+6.06 + 16.00 = 46.08 g/mol (approximate value). The closest value in the options is 46.01 g/mol.

Answer:

D. 46.01 grams/mole