PREPARING 0.1N NaOH SOLUTION (Eq. Wt. 40)

0.1N NaOH SOLUTION (Eq. Wt. 40)

a)   a)      TAKE 4 GM OF A.R. GRADE NaOH AND DISSOLVE IN SMALL AMOUNT OF DISTILLED WATER & FINALLY MAKE IT UPTO 1000 Ml. BY USING MEASERING FLASK.

b) STANDARISATION WITH 0.1N HYDRICHLORIC ACID

TAKE 25 ML OF NaOH SOLUTION AND TITRATE AGAINST 0.1N STANDARDISED HCl SOLUTION BY USING PHENOLPHTHLEIN AS AN INDICATOR. END POINT IS PINK TO COLOURLESS

c) STANDARDISATION WITH 0.1N PATASSIUM HYDROGEN PHTHALATE (COOH C₆H₄COOK, Eq. Wt.204.22)

PREPARE 0.1N    SOLUTION OF POTASSIUM HYDROGEN PHTHALATE BY DISSOLVING 20.422 Gms. IN 1000 Ml. OF DISTILLED WATER. TAKE 25 Ml. AND TITRATE IT WITH ABOVE PREPARED 0.1N NaOH SOLUTION BY USING PENOLPTHALIEN AS AN INDICATOR