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Molar Mass of HCl

How to work out the molar mass of HCl

  1. Count the atoms of each element in HCl: 1 H and 1 Cl.
  2. Multiply each count by the element's atomic weight: 1 × 1.008 = 1.008; 1 × 35.45 = 35.450.
  3. Add the results: 1.008 + 35.450 = 36.458 g/mol.

Frequently asked questions

What is the molar mass of HCl?

The molar mass of hydrogen chloride (hydrochloric acid) (HCl) is 36.458 g/mol, so one mole of it weighs 36.458 grams.

How many moles are in 100 grams of HCl?

100 g ÷ 36.458 g/mol = 2.743 mol.

Which element makes up most of the mass of HCl?

Cl, at 97.24% of the mass.

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