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Table 2

Summary of H2O:NH3:H2S experiments performed.

Dosing ratios Final ratios (a) % NH4SH (a) with respect to H2O Lim. react. Dep. time (min)
H2O NH3 H2S H2O NH4SH NH3 H2S
10 2 1 10 1 1 0 10 H2S 10, 20, 30, 40, 50
8 2 1 10 8 1 0 12.5 H2S 20
6 2 1 10 6 1 0 16.7 H2S 20
5 2 1 5 1 1 0 20 H2S 20

12 3 2 12 2 1 0 16.7 H2S 30
10 3 2 10 2 1 0 20 H2S 10, 20, 30, 40, 50
6 3 2 6 2 1 0 33.3 H2S 30
4 3 2 4 2 1 0 50 H2S 30
3 3 2 3 2 1 0 66.7 H2S 30

8 5 4 8 4 1 0 50 H2S 10, 20, 30, 40, 50

5 1 1 5 1 0 0 20 30
2 1 1 2 1 0 0 50 40
1 1 1 1 1 0 0 100 40

10 2 3 10 2 0 1 20 NH3 40

Notes. (a) Once 100% of the limiting reactant is consumed by the acid-base reaction.

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