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1. What is the [H3O+] and the pH of a buffer that consists of 0.21 M HNO2 and 0.57 M KNO2? (Ka of HNO2 = 7.1*10^-4)

[H3O+] = _____*10^__

pH =____

2. Find the pH of a buffer that consists of 0.70 M HCOOH and 0.56 M HCOONa

(pKa of HCOOH = 3.74)

3. What is the component concentraion ratio, [CH3COO-]/[CH3OOH], of a buffer that has a pH of 5.35?

(Ka of CH3COOH = 1.8*10^-5)

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  • Category:- Chemistry
  • Reference No.:- M9480698

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