Ask a New Question

Asked by Samantha

What is the pH of a 0.0250 M solution of HCN? Ka = 4.0x10^-10
14 years ago

Answers

Answered by bobpursley
HCN >< H+ CN-

.250-x <> x+ x


4E-10=x^2/(.250-x) appx x^2/.250

[H+]= sqrt (4*.250E-10)

= 1E-5

pH= 5
14 years ago

Related Questions

A bullet (m = 0.0250 kg) is fired with a speed of 91.00 m/s and hits a block (M = 2.30 kg) supported... If 15.omL of 0.0250 M aqueous H2SO4 is required to neutralize 10.0 mL of aqueous solution of KOH, wh... what volume of .0250 M MgCl2 should be diluted to 250.0 mL to obtain a solution with [Cl]=.0135? concentration of H30+ in 0.0250 moldm-3 aqueous epuation of HCL
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use