Part A What is the H* concentration for an aqueous solution with pOH = 2.56 at 25 °C? Express your answer to two significant figures and include the appropriate units. > View Available Hint(s) ? 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 POH = 8.55PH = 5.45 0.0023 mol L-' HC1 0.0018 mol L-1 KOH Most acidic Most basic The correct ranking cannot be determined.
Part A What is the H* concentration for an aqueous solution with pOH = 2.56 at 25 °C? Express your answer to two significant figures and include the appropriate units. > View Available Hint(s) ? 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 POH = 8.55PH = 5.45 0.0023 mol L-' HC1 0.0018 mol L-1 KOH Most acidic Most basic The correct ranking cannot be determined.
General Chemistry - Standalone book (MindTap Course List)
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Chapter15: Acids And Bases
Section: Chapter Questions
Problem 15.101QP
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Question
Transcribed Image Text:Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.50.
You have in front of you
Part A
• 100 mL of 7.00 x 10-2mol L-1 HCI,
• 100 mL of 5.00 × 10-2molL-' NaOH, and
• plenty of distilled water.
Assuming the final solution will be diluted to 1.00 L, how much more HCl should you add to achieve the desired pH?
Express your answer to three significant figures and include the appropriate units.
You start to add HCl to a beaker of water when someone asks you a question. When you return to
your dilution, you accidentally grab the wrong cylinder and add some NaOH. Once you realize your
error, you assess the situation. You have 82.0 mL of HCl and 90.0 mL of NaOH left in their original
> View Available Hint(s)
containers.
HA
Value
Units
Transcribed Image Text:Part A
What is the Ht concentration for an aqueous solution with pOH = 2.56 at 25 °C?
Express your answer to two significant figures and include the appropriate units.
• View Available Hint(s)
HẢ
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)
Help
Rese
POH = 8.55
PH 3 5.45 | 0.0023 mol L 1 HCI |0.0018 mol L 1 КОН
Most acidic
Most basic
The correct ranking cannot be determined.
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