Chapter 11: Q11.1-3P (page 441)
A solution of hydrochloric acid in water is hydrochloric acid by mass. Its density is . Compute its molarity, mole fraction, and molality at this temperature.
Chapter 11: Q11.1-3P (page 441)
A solution of hydrochloric acid in water is hydrochloric acid by mass. Its density is . Compute its molarity, mole fraction, and molality at this temperature.
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Get started for freeComplete and balance the following equations for reactions taking place in an acidic solution.
(a)
(b)
(c)
(d)
(e)
The amount of ozone in a mixture of gases can be determined by passing the mixture through an acidic aqueous solution of potassium iodide, where the ozone reacts according to
to form the triiodide ion. The amount of triiodide produced is then determined by titrating with thiosulfate solution:
The solution requires 26.2 mL of a 0.1359-M solution of thiosulfate ion to titrate to the endpoint. Calculate the mole fraction of ozone in the original gas sample. A small amount of starch solution is added as an indicator because it forms a deep-blue complex with the triiodide solution. Disappearance of the blue color thus signals the completion of the titration. Suppose 53.2 L of a gas mixture at a temperature ofand a total pressure of 0.993 atm is passed through a solution of potassium iodide until the ozone in the mixture has reacted completely. The solution requires 26.2 mL of a 0.1359-M solution of thiosulfate ion to titrate to the endpoint. Calculate the mole fraction of ozone in the original gas sample.
Vanadic ion, , forms green salts and is a good reacting agent, being itself changed in neutral solutions to the nearly colorless ion . Suppose that 15.0 mL of a solution of vanadic sulfate, , was needed to reduce completely a sample of an unknown substance . If each molecule of accepted just one electron, what is the molecular weight of ? Suppose that each molecule of accepted three electrons; what would be the molecular weight of then?
You take a bottle of soft drink out of your refrigerator. The contents are liquid and stay liquid, even when you shake to water. Presently, you remove the cap and the liquid freezes solid. Offer a possible explanation for this observation.
At , some benzene is added to a sample of gascous methane at 1.00 atmpressure in a closed vessel, and the vessel is shaken until as much methane as possible dissolves. Then 1.00 kg of the solution is removed and boiled to expel the methane, yielding the volume of methane that results is 0.510 L atrole="math" localid="1663672111295" and 1.00 atm . Determine the Henry's law constant for methane in benzene.
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