[jesus2324]

the question ask .515g of potassium hydrogen phthalate(khc8h404) is diluted with 80ml of water, and 3 drops of phenolphtalein is added. after 24.6ml of naoh is added a pink color lasting for 20 seconds is noted, whats the concentration of naoh.


what i tried doing is getting the .515g multyplying by the potassium grams to get moles, then i added the ml after i converted them to liters, to get M. is that right??

[Babcock_Hall]

This does not sound correct.  You should convert the mass of potassium phthalate (KHP) into moles using the gram molecular weight of KHP, but it is not a multiplication.  Think about the units.