Part A Water ionizes by the equation H2O(1) =H (ag) + OH (ag) The extent of the reaction is small in pure water and dilute aqueous solutions. This reaction creates the following relationship between [H+] and [OH ]: What is the H+ concentration for an aqueous solution with pOH = 3.10 at 25 °C? Express your answer to two significant figures and include the appropriate units. Kw = [H*][OH ] • View Available Hint(s) Keep in mind that, like all equilibrium constants, the value of K, changes with temperature. HÀ ? [H*] = Value Units Submit Part B Arrange the following aqueous solutions, all at 25 °C, in order of decreasing acidity. Rank from most acidic to most basic. To rank items as equivalent, overlap them. • View Available Hint(s)

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Chapter1: Chemical Foundations
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Part C
At a certain temperature, the pH of a neutral solution is 7.85. What is the value of K, at that temperature?
Express your answer numerically to two significant figures.
• View Available Hint(s)
?
K.
Submit
Transcribed Image Text:Part C At a certain temperature, the pH of a neutral solution is 7.85. What is the value of K, at that temperature? Express your answer numerically to two significant figures. • View Available Hint(s) ? K. Submit
Part A
Water ionizes by the equation
H2Ó(1) = H (ag) + OH (ag)
The extent of the reaction is small in pure water and dilute aqueous
solutions. This reaction creates the following relationship between [H+]
and [OH-]:
What is the H+ concentration for an aqueous solution with pOH = 3.10 at 25 °C?
Express your answer to two significant figures and include the appropriate units.
Kw = [H*][OH ]
• View Available Hint(s)
Keep in mind that, like all equilibrium constants, the value of K,
changes with temperature.
?
[H+] =
Value
Units
Submit
Part B
Arrange the following aqueous solutions, all at 25 °C, in order of decreasing acidity.
Rank from most acidic to most basic. To rank items as equivalent, overlap them.
• View Available Hint(s)
Reset
Help
РОН — 8.55
0.0023 mol L1 HC1PH = 5.45
0.0018 mol L KOH
Most acidic
Most basic
O The correct ranking cannot be determined.
Submit
Transcribed Image Text:Part A Water ionizes by the equation H2Ó(1) = H (ag) + OH (ag) The extent of the reaction is small in pure water and dilute aqueous solutions. This reaction creates the following relationship between [H+] and [OH-]: What is the H+ concentration for an aqueous solution with pOH = 3.10 at 25 °C? Express your answer to two significant figures and include the appropriate units. Kw = [H*][OH ] • View Available Hint(s) Keep in mind that, like all equilibrium constants, the value of K, changes with temperature. ? [H+] = Value Units Submit Part B Arrange the following aqueous solutions, all at 25 °C, in order of decreasing acidity. Rank from most acidic to most basic. To rank items as equivalent, overlap them. • View Available Hint(s) Reset Help РОН — 8.55 0.0023 mol L1 HC1PH = 5.45 0.0018 mol L KOH Most acidic Most basic O The correct ranking cannot be determined. Submit
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