Question

The molarity of a solution is 0.05 .Find the molecules of a solute present in 1 ml of the solution

Answer 1

given, molarity of solution = 0.05 and volume ( in l ) = 1/1000=0.001 litre

then, no. of moles of solute =0.05/0.001 = 0.00005 moles

now, no. of molecules = no. of moles x Na

=0.00005 x 6.022 x10^23

=3.011 x 10^19 molecules