A chemical system is set up by placing some solid potassium cyanide in some hydrocyanic acid. The equilibrium established can be represented as follows: HCN(aq) + H2O(l) <--> H₂O*(aq) + CN(aq). The pH of the solution is taken, then a small amount of HCl(aq) is added and the pH is taken again. What can be said about the change in pH for the solution? The pH significantly increases because a strong acid has been added to the solution. The pH significantly decreases because a strong acid has been added to the solution. There is very little change to the pH of the solution. If anything the pH of the solution decreases slightly. There is very little change to the pH of the solution. If anything the pH of the solution increases slightly.
A chemical system is set up by placing some solid potassium cyanide in some hydrocyanic acid. The equilibrium established can be represented as follows: HCN(aq) + H2O(l) <--> H₂O*(aq) + CN(aq). The pH of the solution is taken, then a small amount of HCl(aq) is added and the pH is taken again. What can be said about the change in pH for the solution? The pH significantly increases because a strong acid has been added to the solution. The pH significantly decreases because a strong acid has been added to the solution. There is very little change to the pH of the solution. If anything the pH of the solution decreases slightly. There is very little change to the pH of the solution. If anything the pH of the solution increases slightly.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:A chemical system is set up by placing some solid potassium cyanide in some
hydrocyanic acid. The equilibrium established can be represented as follows:
HCN(aq) + H2O(l) <--> H₂O*(aq) + CN(aq).
The pH of the solution is taken, then a small amount of HCl(aq) is added and the pH
is taken again. What can be said about the change in pH for the solution?
The pH significantly increases because a strong acid has been added to the
solution.
The pH significantly decreases because a strong acid has been added to the
solution.
There is very little change to the pH of the solution. If anything the pH of the
solution decreases slightly.
There is very little change to the pH of the solution. If anything the pH of the
solution increases slightly.
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