What is the molar mass of hydrochloric acid (HCl)?

• A. 36.46 g/mol
• B. 40.08 g/mol
• C. 34.08 g/mol
• D. 38.01 g/mol

Answer: (A)

Verified step by step guidance

1. Identify the elements present in hydrochloric acid (HCl), which are hydrogen (H) and chlorine (Cl).
2. Find the atomic masses of each element from the periodic table: hydrogen has an atomic mass of approximately 1.008 g/mol, and chlorine has an atomic mass of approximately 35.45 g/mol.
3. Add the atomic masses of hydrogen and chlorine to find the molar mass of HCl using the formula: \(\text{Molar mass of HCl} = \text{Atomic mass of H} + \text{Atomic mass of Cl}\).
4. Substitute the values into the formula: \(\text{Molar mass of HCl} = 1.008 + 35.45\).
5. Sum the values to get the molar mass of hydrochloric acid in grams per mole (g/mol).