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23 Nov 2019
A buffer solution contains 0.76 mol of hydrocyanic acid (HCN) and 0.33 mol of sodium cyanide (NaCN) in 5.50 L.
The Ka of hydrocyanic acid (HCN) is Ka = 4.9e-10.
(a) What is the pH of this buffer?
pH = ___________.
(b) What is the pH of the buffer after the addition of 0.68 mol of NaOH? (assume no volume change)
pH = _____________.
(c) What is the pH of the original buffer after the addition of 0.27 mol of HI? (assume no volume change)
pH = _______________.
A buffer solution contains 0.76 mol of hydrocyanic acid (HCN) and 0.33 mol of sodium cyanide (NaCN) in 5.50 L.
The Ka of hydrocyanic acid (HCN) is Ka = 4.9e-10.
(a) What is the pH of this buffer?
pH = ___________.
(b) What is the pH of the buffer after the addition of 0.68 mol of NaOH? (assume no volume change)
pH = _____________.
(c) What is the pH of the original buffer after the addition of 0.27 mol of HI? (assume no volume change)
pH = _______________.
Nestor RutherfordLv2
6 Feb 2019