Calculate the ph of a buffer that is 0.94 mhc2h3o2 and 0.059 mnac2h3o2. the ka for hc2h3o2 is 1.8×10−5. calculate the of a buffer that is 0.94 and 0.059 . the for is . 2.86 3.54 4.74 1.80 5.97

The pH of the buffer is 3.54.

Explanation:

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

We are given:

= negative logarithm of acid dissociation constant of carbonic acid

pH = ?

Putting values in above equation, we get:

The pH of the buffer is 3.54.

points

explanation:

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o