martinapiromaloss23z martinapiromaloss23z
  • 08-07-2017
  • Chemistry
contestada

What is the PH of the acid lactic 0,20 M?

Respuesta :

dec77cat dec77cat
  • 08-07-2017
dissociation constant of lactic acid:
K=1.38·10⁻⁴

C=0.20 mol/L

[H⁺]=√(KC)

pH=-lg[H⁺]=-lg{√(KC)}

pH=-lg{√(1.38·10⁻⁴·0.20)}=2.28

pH=2.28
Answer Link

Otras preguntas

What is the value of 5.7 x 10^8? a. 5,700,000,000 b. 57,000,000 c. 5.70000000 d. 570,000,000
What is the maximum mass of P2I4 that can be prepared from 8.80g of P4O6 and 12.37g of iodine according to the reaction: 5P4O6 +8I2 ---> 4P2I4 +3P4O10
1 and 1 4th as a decimal
how did ernest rutherford discovery affect the model of the atom
Which caused people to leave england and go to america in the 1600s?
A response is like an answer to a message
Given f ( x ) = x^ 2 - 1, find the value .f(x+h)-f(x)/h
Solve for x: y = mx + b
In this excerpt from Kennedy's 1963 Civil Rights Address what idea is being most clearly defined? "This is not a sectional issue. Difficulties over segregatio
What equation is graphed in this figure? y + 2 = −3(x−1) y − 3 = 1/3(x+1) y − 5 = 3(x−1) y − 4 = −1/3(x+2)