## Question

###### Question 5 (1 point) A student obtains an unknown indicator which is colourless in neutral water: When placed in a 0.1 M solution of HCI or NHACl, the indicator remains colourless: When placed in 0.1 M solution of NaNOz, the indicator turns blue: What is the approximate pKa of the indicator?13.0 - 14.05.0 - 6.08.0 - 9.02.0-4.0

Question 5 (1 point) A student obtains an unknown indicator which is colourless in neutral water: When placed in a 0.1 M solution of HCI or NHACl, the indicator remains colourless: When placed in 0.1 M solution of NaNOz, the indicator turns blue: What is the approximate pKa of the indicator? 13.0 - 14.0 5.0 - 6.0 8.0 - 9.0 2.0-4.0

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