Homework Help: Chemistry

Posted by prince on Thursday, December 9, 2010 at 8:51am.

How to find the molarity of NaOH when the given is 0.1803 grams of KHPg/mol molecular w. of KHP is 204.2 9.7 ml NaOH

Chemistry - Dr Russ, Thursday, December 9, 2010 at 9:00am
KHP or potassium hydrogen phthalate is a monoprotic acid used as a primary standard.

so

KHP + NaOH -> KNaP + H2O

if 0.1803 g of KHP has been used, this is

0.1803 g/204.2 g mol^-1
=8.829 x 10^-1 mole

which reacts with the same number of moles of NaOH

so concentration of NaOH is

8.829 x 10^-1 mole /0.0097 L
=0.091 M

only 2 sig figs justified here as only 2 sig figs in volume of NaOH, even though mass and molar mass of KHP are given to 4 sig figs.

Check my maths.

Related Questions

Inorganic chemistry - mol KHP = (0.7719g)(1 mol KHP/204.2g) = .0038mol Where are...
Inorganic chemistry - Potassium hydrogen phthalate (molar mass = 204.2g/mol) is ...
Chemistry - For a chemistry lab the experiment was to carry out an acid-base ...
chemistry - KHP is a monoprotic acid with a molar mass of 204.22 g/mol. The ...
Chemistry(Please help, thank you!) - For a chemistry lab the experiment was to ...
Chemistry - For a chemistry lab the experiment was to carry out an acid-base ...
Chemistry(Please help!!) - For a chemistry lab the experiment was to carry out ...
chemistry - If the 12.5ml of NaOH solution is required to react completely with ...
Inorganic chemistry - Okay, mol KHP = (0.7719)(mol KHP/204.2g KHP) = .0038mol ...
Chemistry - How many grams of KHP (204.22 g/mol) were present in container if 49...

For Further Reading

First Name:
School Subject:
Answer: