Questions from General Chemistry

Q: Calculate the change in pH that occurs when 1.00 mmol

Calculate the change in pH that occurs when 1.00 mmol of a strong acid is added to 100 mL of the solutions listed in Problem 12-3

Q: Calculate the change in pH that occurs when 1.50 mmol

Calculate the change in pH that occurs when 1.50 mmol of a strong base is added to 100 mL of the solutions listed in Problem 12-34. Calculate values to three decimal places.

Q: Calculate the change in pH to three decimal places that occurs when

Calculate the change in pH to three decimal places that occurs when 0.50 mmol of a strong acid is added to 100 mL of a. 0.0100 M lactic acid 1 0.0800 M sodium lactate. b. 0.0800 M lactic acid 1 0.02...

Q: A 5.500-g sample of a pesticide was decomposed

A 5.500-g sample of a pesticide was decomposed with metallic sodium in alcohol, and the liberated chloride ion was precipitated as AgCl. Express the results of this analysis in terms of percent DDT 1C...

Q: A 50.00-mL aliquot of 0.1000 M

A 50.00-mL aliquot of 0.1000 M NaOH is titrated with 0.1000 M HCl. Calculate the pH of the solution after the addition of 0.00, 10.00, 25.00, 40.00, 45.00, 49.00, 50.00, 51.00, 55.00, and 60.00 mL of...

Q: Before agreeing to the purchase of a large order of solvent,

Before agreeing to the purchase of a large order of solvent, a company wants to see conclusive evidence that the mean value of a particular impurity is less than 1.0 ppb. What hypotheses should be tes...

Q: Assuming a large number of measurements so that s is a good

Assuming a large number of measurements so that s is a good estimate of σ, determine what confidence level was used for each of the following confidence intervals.

Q: In a titration of 50.00 mL of 0.05000

In a titration of 50.00 mL of 0.05000 M formic acid with 0.1000 M KOH, the titration error must be smaller than 0.05 mL. What indicator can be chosen to realize this goal?

Q: In a titration of 50.00 mL of 0.1000

In a titration of 50.00 mL of 0.1000 M ethylamine with 0.1000 M HClO4, the titration error must be no more than 0.05 mL. What indicator can be chosen to realize this goal?

Q: Briefly describe or define and give an example of a.

Briefly describe or define and give an example of a. An amphiprotic solvent. b. A differentiating solvent. c. A leveling solvent. d. A mass-action effect.