adamzwangneedshelp adamzwangneedshelp

03-06-2016
Chemistry

contestada

a .35 m solution of weak acid, HX, has a h+ of 4.15×10^-3. what is the value of ka for this acid

Respuesta :

05-06-2016

Ka has the formula:

Ka = [H+] [X-] / [HX]

We have the following given:
[H+] = 4.15x10^-3
[HX] = 0.35

Since the acid dissociates in a ratio of 1 [H+] to 1 X,
[H+] = [X-]

Plugging in the values,
Ka = (4.15x10^-3)(4.15x10-3) / 0.35
Ka = 4.92x10^-5

Answer Link

Otras preguntas

(mc)what did the court cases of griswold v. connecticut and roe v. wade have in common?

A tennis ball is hit into the wall with a speed of 26 m/s. If it rebounds with a speed of 24 m/s, how much energy was lost in the collision? mass of tennis ba

Solve for an angle in right triangles.

Please help almost finished

Identify when in the process of reading a passage or image readers figure out the implicit message, idea, or argument. A. while they look up key words in the

A(n) _____ may be defined as a compound which contributes hydroxide ions or increases the oh- concentration when dissolved in water. acid

The diaper service where you work bills customers once a week. Each week, it charges 30¢ each for the first 75 diapers used, and 25¢ each for any additional di

what did some of the Indians the Frinks encountered do?

How many mother paula restaurants will there be after the one in coconut cove is built?

if a organism haploid number is 10, what is it’s diploid number