Calculate the Concentration of Bicarbonate Ion,HCO₃^-,in a 0

question 155

Multiple Choice

Calculate the concentration of bicarbonate ion,HCO₃^-,in a 0.030 M H₂CO₃ solution that has the stepwise dissociation constants K_a1 = 4.3 × 10^-7 and K_a2 = 5.6 × 10^-11.

• A) 1.1 × 10^-4 M
• B) 4.3 × 10^-7 M
• C) 1.3 × 10^-8 M
• D) 5.6 × 10^-11 M

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Definitions:

Persistence

refers to the enduring existence or continual occurrence of a characteristic, condition, or effect over a long period.

Biologically Magnified

Refers to the process by which certain harmful substances, such as pesticides or heavy metals, increase in concentration as they move up the food chain.

DDT

Dichloro-diphenyl-trichloroethane, a synthetic pesticide known for its environmental persistence and effects on wildlife.

Parathion

A highly toxic organophosphate pesticide used to control insects in agricultural settings.