Problem: At a concentration of 1 M, the weak acid HNO2 is 2% ionized and the pH of the solution is 1.7. What happens when KNO2(s) is dissolved into the solution?decreases            increasesThe extent of HNO2 ionization _____the concentration of H+ _____The pH _____

FREE Expert Solution

HNO2→ H+ + NO2-

KNO2→ K+ + NO2-


addition KNO2 → addition NO2-

NO2-→ product

increase/add NO2- → shift reaction to the left

increase reactant and decrease product

increase [HNO2] and decrease [H+] and [NO2-]


ionization → acquiring a negative or positive charge

addition NO2- → decrease [H+] and [NO2-] → ↓ extent ionization


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Problem Details

At a concentration of 1 M, the weak acid HNO2 is 2% ionized and the pH of the solution is 1.7. 

What happens when KNO2(s) is dissolved into the solution?

decreases            increases

The extent of HNO2 ionization _____

the concentration of H+ _____

The pH _____

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