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Question

Analysis of a water sample revealed that the sample contains the following species.
CO23,Na+,H+,PO34,Al3+,H2CO3,Cl,Ca2+,Mg2+,HCO3,Fe2+,OH
Concentrations of which of the species will be required to compute alkalinity?

A
H+,H2CO3,HCO3,OH
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B
CO23,H+,HCO3,OH
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C
CO23,H2CO3,HCO3,OH
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D
CO23,H+,H2CO3,HCO3
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Solution

The correct option is B CO23,H+,HCO3,OH
H2CO3andHCO3never come together

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