What is the molar mass of HCl. Use a molar mass of 1.01 for Hydrogen.
The correct answer and explanation is:
The molar mass of HCl (hydrochloric acid) is calculated by adding the molar mass of hydrogen (H) and chlorine (Cl).
- Hydrogen (H): The molar mass of hydrogen is given as 1.01 g/mol.
- Chlorine (Cl): The molar mass of chlorine is 35.45 g/mol.
Now, to calculate the molar mass of HCl: Molar mass of HCl=Molar mass of H+Molar mass of Cl\text{Molar mass of HCl} = \text{Molar mass of H} + \text{Molar mass of Cl} Molar mass of HCl=1.01 g/mol+35.45 g/mol\text{Molar mass of HCl} = 1.01 \, \text{g/mol} + 35.45 \, \text{g/mol} Molar mass of HCl=36.46 g/mol\text{Molar mass of HCl} = 36.46 \, \text{g/mol}
Thus, the molar mass of HCl is 36.46 g/mol.
Explanation:
The molar mass of a compound refers to the mass of one mole of that substance. In the case of HCl, it is a simple molecule consisting of one hydrogen atom and one chlorine atom. The molar mass of each element is derived from the periodic table and is the mass of one mole of atoms of that element. The molar mass of hydrogen is quite small (1.01 g/mol), while the molar mass of chlorine is significantly larger at 35.45 g/mol. When combined, they yield a molar mass of 36.46 g/mol for hydrochloric acid.
This molar mass is essential for various calculations in chemistry, especially when determining the amount of substance in a given mass of HCl, calculating moles, or when preparing solutions. It can also be used in stoichiometric calculations for chemical reactions involving HCl.