Contoh Soal Buffer Dan Hidrolisis
Tuesday, May 15, 2018
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Soal:
16.8 Identify the buffer system bellow :
16.9 Calculate the pH of the buffer system made up of 0.15 M NH3/0.35 M NH4Cl.
16.14 The pH of blood plasma is 7.40. Assuming the principal buffer system is HCO/H2CO3, calculate the ratio [HCO- 3]/[H2CO3]. Is this buffer more effective against an added acid or an added base?
16.16 Calculate the pH of 1.00 L of the buffer 1.00 M CH3COONa/1.00 M CH3COOH before and after the addition of (a) 0.080 mol NaOH, (b) 0.12 mol HCl.
16.17 A diprotic acid, H2A, has the following ionization constants: Ka1 = 1.1 x 10-3 and Ka2 = 2.5 x 10-6. In order to make up a buffer solution of pH 5.80, which combination would you choose? NaHA/H2A or Na2A/NaHA
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