What is the pH of 1.00 L of a buffer that is 0.140 M nitrous acid...

Question

Question

What is the pH of 1.00 L of a buffer that is 0.140 M nitrous acid (HNO2) and 0.200 M NaNO2? (pKa of HNO2 = 3.40)

science chemistry

Answer 1

Answer #1

For acidic buffer

pH = pKa + log(salt/acid)

= 3.40+log(0.200/0.140)

= 3.56

Answer 2

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