3. concentration of sodium hydroxide in a flask was found to be
8.0g/dm3 (call this solution X). What is the final concentration of
the solution produced when 100 cm3 of distilled water is added to
100 cm3 of sol X?
This is my solution:
(100/1000) dm3 = 0.1 dm3
distilled water: 0.1 dm3
0.1 x 8g/dm3 = 0.8 g
mol = conc x vol
mol of NaOH: (0.8/40) = 0.02 mol
0.02 mol = conc x (0.1 +0.1)
(0.02 mol / 0.2) =
conc
= 0.1 mol/dm3 #
is this correct?
