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

Test 11.3.2 Question 8 of 10 What causes the southern hemisphere to experience summer? A. Earth's south pole is tilted toward the sun. B. Earth's axis and it's

The highest court in the land is the US - Court of Appeals O Supreme Court O District Court High Court PLEASE HELPPP

3 erasers cost $4.41. Which equation would help determine the cost of 4 erasers?

Please help with this and don't put the wrong answer please. 30 points.

Reflect (-6, -7) across the x-axis. Then reflect the result across the y-axis. What are the coordinates of the final point?

Y multiplied by 2 1/2

How many bases does a triangular prism have? (if you explain I will give brainlyist)

Simplify: -9f - 0.5f + 0.25 *

Asthma is a type of chronic lower respiratory disease, CLRD, that affects individuals of all ages. It is very difficult to diagnose in children because the symp

This is overdue... I'm desparate