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

What did Carl Marx believe about the relationship between the rich and the poor ?

What are the 7 ways to prove 2 lines are parallel?

Help is appreciated

True or false: divorce is not allowed for the citizens in oceania.

If -5 is a root of the quadratic equation 2x^2+px+15=0 and the equation p(x^2+x) +k=0 has equal rootsv then find p and k

How did the headlines change as Napoleon got closer to Paris and the seat of government

Which of these qualities is generally true of both traditional and modern plays? A. They fall into one of these two categories: tragedy or drama. B. They cont

A calorimeter contains 195 g of water at 20.4 º C. A 37.8 g sample of an unknown metal is heated to 133 º C and placed into the water in the calorimeter. The fi

Hey! Can someone help me please?Which organism most likely has 10% of the Sun's energy available for its use?(See photo below)A. MouseB. ShrubsC. SnakeD. Hawk

Idk the answer to this at all and the “question help” wasn’t helpful at all