# Chemistry

Hydrocyanic acid has a Ka of 4.0 X 10-10. What is the percent of ionization of a 1.0 molar solution?
my answer is 0.004% is this correct?

a) 0.004%
b) 0.0020%
c) 0.0004%
d) 0.02%

1. 👍 0
2. 👎 0
3. 👁 64
1. How did you get 0.004%? That isn't my answer.

1. 👍 0
2. 👎 0
2. Hydrocyanic acid has a Ka of 4.0 X 10-10. What is the percent of ionization of a 1.0 molar solution?
my answer is 0.004% is this correct?
(4.0 x 10-10)/1.0 x 100 this wrong?

a) 0.004%
b) 0.0020%
c) 0.0004%
d) 0.02%

1. 👍 0
2. 👎 0
posted by Centhia

## Similar Questions

1. ### chemistry

A 0.185 M solution of a monoprotic acid has a percent ionization of 1.55%. Determine the acid ionization constant (Ka) for the acid.

asked by cindy on April 24, 2012
2. ### chemistry

For a week acid whose ionization constant is 1.75 x 10(-5), the pH of its solution is 3.0. Determine its degree of ionization and its percent ionization.

asked by chris on October 13, 2011
3. ### Chemistry

Consider 1.00 L of the buffer system that contains 0.200 M hydrocyanic acid(HCN) and 0.150 M sodium cyanide (NaCN). The pKa of hydrocyanic acid is 9.31. What is the [HCN] after 0.020 mol of HCl is added?

asked by Mary on March 26, 2017
4. ### Chemistry

What will happen if a small amount of hydrochloric acid is added to a 0.1 M solution of HF? A) The percent ionization of HF will increase. B) The percent ionization of HF will decrease. C) The percent ionization of HF will remain

asked by Robby on March 7, 2013
5. ### Chemistry

The pH of 0.15 mol/L of hydrocyanic acid is 5.07. Calculate Ka of hydrocyanic acid.

asked by Brandon on November 26, 2011
6. ### Stupid Chemistry

Ok, blonde moment here, Kb is the same as Ka but just for bases and Ka is for acids correct? right. Ka is the ionization constant for acids, Kb is the ionization constant for bases. BUT, we can change one into the other this way.

asked by Taasha on August 4, 2007
7. ### chemistry

What is the percent ionization of a 1.38 mol/L weak acid if its Ka = 2.7 x 10-6? Answer to two (2) decimal places. I know what steps to use but have difficulty applying them to the quesiton Can someone please complete the question

asked by Anna on April 18, 2008
8. ### chemistry

Calculate the percent ionization of a .31 molar solution of acetic acid. The ionization constant of acetic acid is 1.8 x 10^-5

asked by Avery on March 1, 2016
9. ### chemistry

a) Calculate the percent ionization of 0.125M lactic acid (Ka=1.4x10^-4) b) Calculate the percent ionization of 0.125M lactic acid in a solution containing 0.00075 M sodium lactate.

asked by Nina on July 31, 2014
10. ### chemistry

how do you write the ionization reaction and the acid ionization constant expression for the third ionization of phosphoric acid in water? Can you explain the main concepts that are involved in this?

asked by ryan on May 12, 2012

More Similar Questions