What is the molar mass of C6H5CH3?

Understand the Problem

The question is asking for the molar mass of the chemical compound C6H5CH3, which is commonly known as toluene. To find the molar mass, we need to add together the molar masses of all the atoms in the formula.

Answer

The molar mass of toluene is $92.14 \, \text{g/mol}$.

Steps to Solve

Identify the elements and their quantities

In the chemical formula C₆H₅CH₃, we identify the elements and count the atoms:

Carbon (C): 6 (from C₆) + 1 (from CH₃) = 7
Hydrogen (H): 5 (from H₅) + 3 (from H₃) = 8

So, the total count is:

Carbons (C) = 7
Hydrogens (H) = 8

Find the molar mass of each element

Next, we look up the molar masses of the elements:

Molar mass of Carbon (C) = 12.01 g/mol
Molar mass of Hydrogen (H) = 1.008 g/mol

Calculate the total molar mass

Now we can calculate the total molar mass by using the count of each element:

For Carbon: $$ 7 \text{ C} \times 12.01 , \text{g/mol} = 84.07 , \text{g/mol} $$
For Hydrogen: $$ 8 \text{ H} \times 1.008 , \text{g/mol} = 8.064 , \text{g/mol} $$

Then, add the results: $$ \text{Total Molar Mass} = 84.07 , \text{g/mol} + 8.064 , \text{g/mol} $$

Final Calculation

Finally, add the calculated masses: $$ \text{Total Molar Mass} = 84.07 , \text{g/mol} + 8.064 , \text{g/mol} = 92.134 , \text{g/mol} $$

The molar mass of toluene (C₆H₅CH₃) is approximately 92.14 g/mol.

More Information

Toluene is a common solvent used in paint thinners and is also found in various chemical processes. Its relatively low molar mass contributes to its volatility and ability to dissolve a wide range of organic compounds.

Tips

Failing to account for all atoms of each element in the compound.
Forgetting to multiply the molar mass of each element by the number of atoms present.
Rounding errors when adding the individual molar masses.

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