[NH3] = 0.9M
[NH4Cl] = 0.3M
PKb = -logKb
= -log1.8*10^-5
= 4.74
POH = Pkb + log[NH4Cl]/[NH3]
= 4.75 + log0.3/0.9
= 4.75-0.477
= 4.273
PH = 14-POH
= 14-4.273
= 9.73
9.73 >>>>>answer
O 6.95 Question 26 Calculate the pH of a buffer solution made of 0.9 M NH3...
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1. Calculate the pH of a buffer solution which is 0.50M in NH3 and 0.30M in NH4Cl. Given Kb = 1.8 x 10^-5 for NH3. a) Calculate Ka. b) Calculate pKa. c) Calculate pH using the Henderson-Hasselbalch equation.
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A buffer solution is prepared by mixing 50.0 mL of 0.300 M NH3(aq) with 50.0 mL of 0.300 M NH4Cl(aq). The pKb of NH3 is 4.74. Calculate the NH3 concentration in the buffer solution. Calculate the NH4Cl concentration in the buffer solution. Calculate the pH of the buffer solution. 7.50 mL of 0.125 M NaOH is added to the 100.0 mL of the original buffer solution prepared in Question 1. Calculate the new NH3 concentration for the buffer solution. Calculate...
Kb for NH3 is 1.8x10^-5. What is the pH of a 0.35-M aqueous solution of NH4Cl at 25°C?
1. Calculate the pH of a solution prepared by dissolving 0.850 mol of NH3 and 0.350 mol of NH4Cl in water sufficient to yield 1.00 L of solution. The Kb of ammonia is 1.77 × 10-5 (a) 5.137 (b) 4.367 (c) 9.633 (d) 8.781 (e) 8.863 2. A 0.1 M solution of which of the following willl have the highest pH? (a) KCN, Ka of HCN = 4.0x10-10 (b) NH4NO3, Kb of NH3 = 1.8x10-5 (c) NaOAc, Ka of HOAc...
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