Calculate the p H of a buffer solution made from mixing 51 mL of 0.13 M H A and 51 mL of 0.14 M N a A. The K a for H A is 5.9E-7.

How many mL of 0.21 M NaOH have to be added to reach the equivalence point when 15.00 mL of 0.29 M H3PO4 are titrated with this NaOH solution? Round your answer to two decimal places.

You need to prepare an acetate buffer of pH 5.455.45 from a 0.843 M0.843 M acetic acid solution and a 2.06 M KOH2.06 M KOH solution. If you have 630 mL630 mL of the acetic acid solution, how many milliliters of the KOHKOH solution do you need to add to make a buffer of pH 5.455.45? The p?apKa of acetic acid is 4.76.4.76. Be sure to use appropriate significant figures.   mL

A triprotic acid is titrated with KOH. What species are NOT in solution to any large extent between the 1st and 2nd equivalence points? Select all that apply. O H3A O HA? O A³- K+ O OH H2A

It's 0.1 ml of 1 M HCl

Formic acid, HFor, has a K, value of 1.8 x 104. You need to prepare 125 mL of a buffer hav- ing a pH of 3.25 from 0.10 M HFor solution and a 0.10 M NaFor solution. How many mL of NaFor and HFor should be mixed to make the desired buffer?