I have analyze the assay of Nitric acid against with 1N NaoH and Faoud the Result -77.61% but AR Grade Nitric acid have 69 to 71% purity. so this way is corect or Not???
pocedure-1.0g of sample+50mlwater +2-3 drop of methyle red Indicator and Titrate with 1NaoH
=Consumed volume*molarity of 1N NaoH*6.3
Weight of sample