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Prajeeth Babu Grade: 11
        
What is the molarity of h2so4 solution that has a density of 1.84 g/cc and contains 98% by mass of h2so4?(atomic mass of s=32)? Ans=18.4M 
How?
 
2 years ago

Answers : (1)

Ashutosh Sharma
askIITians Faculty
181 Points
										Molar mass of H2SO4 = 98g/mol = Mm
D =density = 1.84g/cc
W/w = 98%
V = 1dm3 = 1L = 1000ml = 1000cc
Mass of solution = V x D
M = 1000 x 1.84 = 1840g per 1000cc
Using w/w, 98% of 1840g = H2SO4
= (98/100) x 1840 = 1803.2g = m
Nos of moles = m/Mm = 1803.2/98 = 18.4moles per 1000cc
Thus, molarity = 18.4M (18.4mol/dm3)
2 years ago
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