Answer:
Yes
Explanation:
Before dilution:
Volume of NaCl = 10 mL
Concentration of NaCl = 0.5 M
Number of moles = Molarity*Volume = 0.5*10 = 5 millimoles.
Note that number of moles of NaCl does not change on dilution as we are only adding water.
After dilution:
Volume of NaCl = 100 mL
Number of moles = 5 millimoles (no change)
New Concentration = Number of moles per volume in litres = [tex]\frac{5\times10^{-3}}{100\times10^{-3}}[/tex]= 0.05 Molar
Hence the concentration became one-tenth of the initial concentration after dilution.
