Answer:
C. increase to 7.
Explanation:
Hello,
In this case, the undergoing chemical reaction is:

Thus, the molar relationship is 1 to 1, therefore, the moles are:

Thus, since the entire hydrogen ions are neutralized, the pH C. increase to 7.
Best regards.
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Answer:

Explanation:
Hello!
In this case, since know the volume, temperature and pressure of the initial containers, we can compute the moles of each gas prior to the opening of the valve as shown below:

Next, we add them up to obtain the total moles:

Now, the total volume:

Finally, the total pressure is computed by using the ideal gas equation:

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Answer:
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