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19. A water contains 50 mg/L of CO,²- and 50 mg/L of HCO3. Calculate the approximate alkalinity (not accounting for H* or OH´) in mg/L as CACO, at 25 °C.
a) 41 b) 84 c) 124 d) 145 e) 210
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a) 41 b) 84 c) 124 d) 145 e) 210
Fig: 1
Fig: 2
