20 a Calculate how many milliliters of 0100 M HCI should be

20. (a) Calculate how many milliliters of 0.100 M HCI should be added to how many grams of sodium acetate dehydrate to prepare 250.0 mL of 0.100 M buffer, pH 5.00. (b) If you mixed what you calculated, the pH would not be 5.00. Describe how you would actually prepare this buffer in the lab.

Solution

A) N1*v1=n2v2

0.100*v1=0.100*250.0

V1=250.0ml required ml of .100M of HCL

Where the n1, v1 are the normality and volume of HCL

and n2, v2 are the normality and volume of sodium acetate dehydrede

B) if the ph of the buffer is not exact upto 5 then we will add the acid or base as required to add to adjust