Grade 12Physical Chemistry
Concentrated h2so4 has density of 1.9g/ml and is 99% by weight . Calculate molarity of h2so4
Concentrated h2so4 has density of 1.9g/ml and is 99% by weight . Calculate molarity of h2so4
2 Answers
Yash Yash
Molar mass of h2so4-98gm
Density is 1.9g/ml
Which means 1000 ml(1lire) h2so4 will weigh 1900gm
% w/w-99%
i.e. H2so4 in 1000 ml is 99/100*1900=1881gm
No. Of moles of h2so4 is1881÷19=19.19
Therefore, molarity=no. Of moles of solute/volume of soln.
Molarity=19.19/1
=19.19
Khimraj
molarity = (given mass * density * 10)/(molar mass)
= 99*1.9*10/98 = 19
Hope it clears......................................................
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