Question

A solution of etanol is water 1.54 molar how many gram of it are there in 2500 gram of the solvent

Answer 1

as. molarity = no. of moles of solute/ volume of solution ( in l)

so, no. of moles = molarity x volume

=1.54 x 2.5

=3.85 moles

again, as no.of moles = given mass/ molecular mass

hence, given mass = no. of moles x molecular mass of ethanol

=3.85 x 46

=177.1 g