A 1.00 liter solution contains 0.39 M nitrous acid and 0.51 M sodium nitrite. If 0.260 moles of potassium hydroxide are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of potassium hydroxide.) _______ A. The number of moles of HNO2 will decrease. _______ B. The number of moles of NO2- will decrease. _______ C. The equilibrium concentration of H3O+ will increase. _______ D. The pH will decrease. _______ E. The ratio of [HNO2] / [NO2-] will remain the same.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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A 1.00 liter solution contains 0.39 M nitrous acid and 0.51 M sodium nitrite. If 0.260 moles of potassium hydroxide are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of potassium hydroxide.) _______ A. The number of moles of HNO2 will decrease. _______ B. The number of moles of NO2- will decrease. _______ C. The equilibrium concentration of H3O+ will increase. _______ D. The pH will decrease. _______ E. The ratio of [HNO2] / [NO2-] will remain the same.

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