izabellehannah3363 izabellehannah3363
  • 10-03-2020
  • Chemistry
contestada

If a buffer solution is 0.130 M 0.130 M in a weak acid ( K a = 1.4 × 10 − 5 ) Ka=1.4×10−5) and 0.540 M 0.540 M in its conjugate base, what is the pH ?

Respuesta :

emaikwuvictor
emaikwuvictor emaikwuvictor
  • 12-03-2020

Answer: pH= 0.68015

Explanation:

From the question,

pKa= 1.5×10-5, [salt]= 0.54M, [ acid]=0.13M

Using the Henderson Hasselbalch equation

pH= pKa + log[salt/acid]

pH=1.4×10-4+ log[0.54/0.14]

pH= 0.000015+ 0.618

pH=0.68015

Answer Link

Otras preguntas

How do you write the equation? What is the solution on question 2
conformity and the consumer culture of the 1950s were both supported by which act?
immigration currently accounts for about of us population growth
Select all that apply. According to the text, which of the following were reasons the novel was not initially accepted by literate society? Novels were often fo
Round 87,658 to the nearest thousand
“Although it began in Europe the spread of the Cold War to other regions was a much more dangerous development.” To what extent do you agree with this judgment?
what are some examples of secularism in modern day life
the area of the base of a triangular pyramid is 42 square feet. the volume is 1,197 cubic feet. what is the height of the pyramid?
What is 164 rounded to the nearest 10
A certain gene in a bacterium codes for a polypeptide that is 120 amino acids long. How many nucleotides are needed in the mRNA to code for this polypeptide? A.