Question

If the density of methanol is 0.793 kg 1-1, what is its volume needed for making 2.5 L of its 0.25 M
solution ?
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Answer 1

Answer:

0.0252L

Explanation:

as we know,

molarity= moles of solute/ volume of solution in liter

given sol. 0.25M

n= 0.625

molar mass of methanol =32g/mol

mass of methanol=0.625× 32

density= 0.793kg/l =793g/l

volume=mass/density

volume=0.625×32/793   = 0.0252L