Answer to Question #204869 in General Chemistry for rana issa

Question

10 ml of boric acid solution was placed inside 250ml conical flask And after adding distilled water and mannitol to the solution it required 15ml of .10 M naoh solution to reach phenolphthalein endpoint the molarity of the boric acid solution is

Answer 1

Molarity $= moles/ litre$

Moles=15/61.8

=0.2427moles

Molarity = 0.2427/1000

= 2.42× 10^-4M