Problem: What is the mass percent of chlorine in hydrochloric acid?

FREE Expert Solution

We are asked to calculate for the mass percent (mass %) of Cl in HCl. 


To do that we’re going to use the mass percent formula shown below:

mass% Cl = mass of Clmass of HCl x 100%


First, we need to get the molar mass of HCl.

Molar mass of HCl:

HCl       1 H   x   g/mol H      =   1.00 g/mol H        

           Cl  x 35 g/mol Cl    =   35.45 g/mol Cl 
                     
              Sum   =  36.45 g/mol HCl

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What is the mass percent of chlorine in hydrochloric acid?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mass Percent Formula concept. You can view video lessons to learn Mass Percent Formula. Or if you need more Mass Percent Formula practice, you can also practice Mass Percent Formula practice problems.

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Based on our data, we think this problem is relevant for Professor Cavanaugh's class at San Diego Mesa College.