November 28, 2015

Homework Help: Chemistry urgent for my LAB today (22.09.11)

Posted by Petty on Wednesday, September 21, 2011 at 2:55pm.

0.250g of phthalic acid is dissolved in 40.00cm^3 of 0.100 mol dm^-3 NaOH. It requires 11.80 cubic centimeters of 0.100 mol\dm^-3 HCL fo neutralisation( to phenolphthalein) The mole ratio in which phthalic acid reacts with sodium hydroxide ihn 1:2

(a) Calculate the moles of excess NaOH reacted with HCL
(b)Calculate the moles of phthalic acid used
(c) Calculate the molecular mass of phthalic acid

p.s-urgently need help to solve this before my lab today :'( (22.09.11)

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