steelseries65 steelseries65

19-03-2017
Chemistry

contestada

In a 0.1000M solution of methanoic acid, [H+]=4.2 x 10^-3M. Calculate the Ka of this acid.

Respuesta :

Аноним Аноним

31-03-2017

In order to determine the Ka of the compound, we can use the expression for the calculation of pH for weak acids which is expressed as:

pH = -0.5 log Ka
-log (H+) = -0.5 log Ka
-log (4.2x10^-3) = -0.5 log Ka
Ka = 1.764x10^-5

Hope this answers the question.

Answer Link

Otras preguntas

Ellie next asks you about the component located near the top of the window below the title bar. You explain that it provides easy, central access to the tasks p

What did the 1994 Violence Against Women Act do? A.) Decrease the number of unmarried mothers and divorces in the United States. B.) Increase resources to prose

Phospholipids make up most of the lipid part of the cell membrane. Since water exists on both the outside and inside of a cell, which of the following phospholi

_______ make up the basic structure of a relational database with columns containing field data and rows containing record information. a. QR codes b. tablets c

Under the bracero program: a. Mexican immigrants were denied entry to the United States. b. marriages between Mexicans and Americans were banned. c. Mexican imm

Helium is most known for its uses in floating balloons, but it has many scientific applications, such as preparing NASA rockets, testing aircraft in wind tunnel

Suppose that the central diffraction envelope of a double-slit diffraction pattern contains 15 bright fringes and the first diffraction minima eliminate (are co

I need help very much please

Which of these is one of the five determinants of health

Which organic molecules form the major structural materials of the body? a.) proteins b.) calcium salts in bones c.) lipids d.) carbohydrates