Walk-Through for QF20.km Halo Pilot Knowledge-Base

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Walk-Through for QF20.kmHalo Pilot Knowledge-Base

• Jason Chaw
• jchaw_at_cs.utexas.edu

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Question QF20

• The pH of a 1.0M solution of HCl is
• 1.0
• 0.1
• 0.0
• less than 0.0
• between 0.0 and 1.0

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Question QF20

• Basically question requires us to calculate the
  pH for some aqueous solution given its
  concentration and base
• Strategy
• Represent 1.0M of HCl solution as an instance of
  an aqueous solution concept
• Query the pH slot of our aqueous solution
  instance
• Use a conditional to determine appropriate option
  having calculated pH value

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QF20 Step 1

• Represent 1.0M of HCl solution as an instance of
  an aqueous solution concept

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QF20 Step 1

• Represent 1.0M of HCl solution as an instance of
  an aqueous solution concept

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QF20 Step 1

• Represent 1.0M of HCl solution as an instance of
  an aqueous solution concept

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QF20 Step 2

• Query the pH slot of our aqueous solution instance

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QF20 Step 2

• Query the pH slot of our aqueous solution instance

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QF20 Step 2

• Query the pH slot of our aqueous solution instance

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QF20 Step 2

• Query the pH slot of our aqueous solution instance

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QF20 Step 2

• Query the pH slot of our aqueous solution instance

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QF20 Step 2

• Query the pH slot of our aqueous solution instance

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QF20 Step 2

• Query the pH slot of our aqueous solution instance

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QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

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QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

16
QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

17
QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

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QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

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QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

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QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

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QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

22
QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

23
QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

24
QF20 Step 3

• Use a conditional to determine appropriate option
  having calculated pH value

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Question QF20

• The pH of a 1.0M solution of HCl is
• 1.0
• 0.1
• 0.0
• less than 0.0
• between 0.0 and 1

Options (c) and (e) are the correct answers!