so the Molarity of the diluted is M/(250/20)
25ml*(M/(250/20)=15ml*.5
M= 15.*.5*250/20*1/25=15*.25 check that.
from preceeding,
molarity= gramssolute/molmass*1liter
grams solute/liter= M*molmassHCl
= 15*.25/36
A domestic cleanser contains concentrated HCl as the active ingredient. A titration experiment was carried out to determine the concentration of HCl in the domestic cleanser. 20.0 ml of the cleanser were diluted to 250.0 ml with distilled water. 25.0 ml of the diluted cleanser were the titrated against 0.5 mol L-1 sodium hydroxide solution. 15.00 ml of sodium hydroxide solution were required for complete neutralization.
(A)Calculate the molarity of hydrochloric acid in the cleanser.
(B)Calculate the concentration, in g dm-3, of hydrochloric acid in the cleanser.
Thank you
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