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Question
Concentrated aq sulphuric acid is 98%H2SO4 by mass &has a density of 1.86gml^-1.Volume of acid required to make one litre of 0.1 M H2SO4 is
Concentrated aq sulphuric acid is 98%H2SO4 by mass &has a density of 1.86gml^-1.Volume of acid required to make one litre of 0.1 M H2SO4 is
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Solution
By the formula M1 = density × 10 × % by mass / molecular mass
A/c to question ,,
densily =1.86g/ml=1.86g/10^-3L=1860g/L
M1 = 98×1860×10 / 98 =18600M
Now from formula ,
M1V1 = M2V2
M1=18600, V1=?, M2=0.1, V2=1L
So, V1= M2V2 / M1
V1 =0.1×1 /18600=5.37*!0^-6L
Answer is 5.38*!0^-6L
A/c to question ,,
densily =1.86g/ml=1.86g/10^-3L=1860g/L
M1 = 98×1860×10 / 98 =18600M
Now from formula ,
M1V1 = M2V2
M1=18600, V1=?, M2=0.1, V2=1L
So, V1= M2V2 / M1
V1 =0.1×1 /18600=5.37*!0^-6L
Answer is 5.38*!0^-6L
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