What is the pH of a mixture of 0.042 M NaH2PO4 and 0.058 M Na2HPO4? If 1.0 mL of 10.0 M NaOH is added to a liter of the buffer prepared, how much will the pH change? (pKa = 6.86)

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#Question id: 19621

#XL - P Chemistry

In 30 minutes, a first-order reaction is 50% complete. Calculate the amount of time it took to complete 87.5 percent of the reaction.

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#Question id: 19622

#XL - P Chemistry

In a reaction, what is the driving force?

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#Question id: 19623

#XL - P Chemistry

What is the heat of reaction for ethyl acetate hydrolysis?

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#Question id: 19624

#XL - P Chemistry

According to Lewis concept, an acid is:

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#Question id: 19625

#XL - P Chemistry

Ostwald’s dilution law is applicable to:

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#Question id: 19626

#XL - P Chemistry

The pH of a solution of hydrochloric acid is 4. The molarity of the solution is: