Chemistry, 15.04.2021 01:10 asandors9617
What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to which 0.150 mol of HCl were added
Answers: 3
![[HF]=\frac{0.450mol}{1.0L} =0.450M](/tpl/images/1259/6958/38e45.png)
![[NaF]=\frac{0.050mol}{1.0L} =0.050M](/tpl/images/1259/6958/72597.png)
![pH=pKa+log(\frac{[NaF]}{[HF]} )\\\\pH=3.17+log(\frac{0.05M}{0.45M} )\\\\pH=2.21](/tpl/images/1259/6958/789be.png)
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What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to...
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