Problem: Find the molarity of a 40.0% by mass aqueous solution of sulfuric acid, H2SO4, for which the density is 1.3057 g/mL.

🤓 Based on our data, we think this question is relevant for Professor Li's class at CSUF.

FREE Expert Solution

molarity (M)=moles soluteL solution


mass percent of H2SO4 = 40.0%


% Mass=mass of CH3COOHmass of solution


This means in 100 g of solution, we have 40.0 g H2SO4


40.0%=40.0 g H2SO4100 g solution



molar mass H2SO4 = 98.079 g/mol



The moles of H2SO4 is:

moles H2SO4=40.0 g H2SO4×1 mol H2SO498.079 g H2SO4

moles H2SO4 = 0.4078 mol


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Problem Details

Find the molarity of a 40.0% by mass aqueous solution of sulfuric acid, H2SO4, for which the density is 1.3057 g/mL.

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Based on our data, we think this problem is relevant for Professor Li's class at CSUF.

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Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.