Table of Contents
Including Weak Conjugate to Barrier
1
) What mass of KHCO3 have to be contributed to 500. mL of a 0.200 M H2CARBON MONOXIDE3 remedy to prepare a barrier with pH = 6.30?
(a) 8.73 g
(b) 4.55 g
(c) 24.07 g
(d) 8.33 g
2
) What mass of NH4Cl needs to be included in 500. mL of a 0.150 M NH3 remedy to prepare a barrier with pH = 9.50?
(a) 1.14 g
(b) 2.54 g
(c) 6.97 g
(d) 2.31 g
3
) What mass of NH4Cl should be included in 200. mL of a 0.200 M NH3 service to prepare a barrier with pH = 9.30?
(a) 1.95 g
(b) 1.12 g
(c) 2.34 g
(d) 1.11 g
4
) What mass of salt acetate must be contributed to 1.00 L of a 0.200 M acetic acid remedy to prepare a barrier with pH = 4.50?
(a) 28.5 g
(b) 5.99 g
(c) 9.44 g
(d) 7.63 g
5
) What quantity of a 4.00 M ammonium chloride remedy should be contributed to 250. mL of a 0.250 M ammonia remedy to prepare a barrier with pH = 9.10?
(a) 22.58 mL
(b) 6.39 mL
(c) 10.81 mL
(d) 7.44 mL
6
) What quantity of a 4.50 M salt acetate need to be contributed to 250. mL of a 0.200 M acetic acid service to prepare a barrier with pH = 5.00?
(a) 20.22 mL
(b) 7.17 mL
(c) 23.02 mL
(d) 6.11 mL
7
) What quantity of a 5.00 M salt acetate must be contributed to 1.00 L of a 0.200 M acetic acid option to prepare a barrier with pH = 4.50?
(a) 69.51 mL
(b) 14.61 mL
(c) 23.02 mL
(d) 17.63 mL
8
) What quantity of a 2.50 M HCO3– option needs to be contributed to 500. mL of a 0.150 M CARBON MONOXIDE32- service to prepare a barrier with pH = 10.00?
(a) 9.71 mL
(b) 62.68 mL
(c) 14.36 mL
(d) 7.44 mL
9
) What quantity of a 4.50 M salt nitrite should be included in 250. mL of a 0.200 M nitrous acid option to prepare a barrier with pH = 3.00?
(a) 24.87 mL
(b) 4.96 mL
(c) 6.77 mL
(d) 3.43 mL
10
) What quantity of a 3.00 M HCO3– remedy should be included in 200. mL of a 0.200 M CARBON MONOXIDE32- service to prepare a barrier with pH = 10.30?
(a) 12.73 mL
(b) 6.51 mL
(c) 14.36 mL
(d) 13.96 mL
11
) What quantity of a 3.50 M KHCO3 need to be included in 500. mL of a 0.200 M carbonic acid option to prepare a barrier with pH = 6.30?
(a) 13.55 mL
(b) 12.97 mL
(c) 34.35 mL
(d) 23.76 mL
12
) What mass of NaHCO3 should be contributed to 250. mL of a 0.250 M CARBON MONOXIDE32- service to prepare a barrier with pH = 10.50?
(a) 1.14 g
(b) 3.16 g
(c) 7.95 g
(d) 3.47 g
13
) What mass of salt acetate should be included in 250. mL of a 0.200 M acetic acid service to prepare a barrier with pH = 5.00?
(a) 7.46 g
(b) 2.65 g
(c) 12.44 g
(d) 9.01 g
14
) What mass of salt nitrite need to be contributed to 250. mL of a 0.200 M nitrous acid remedy to prepare a barrier with pH = 3.00?
(a) 30.90 g
(b) 1.54 g
(c) 3.44 g
(d) 1.07 g
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