kmarks People Window He Pre-Lecture Chapter 10 ecure htt ry.com/myctltemviewTass
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kmarks People Window He Pre-Lecture Chapter 10 ecure htt ry.com/myctltemviewTassignment ProblemD-95840028 Pre-Lecture Chapter 10 H Indicators 4of16 ) Part A The table shows respective color change when a universal Indicator added to the clear solutions Rank the sampies based on inoreasing onder of acid strengtn 0.001 M lactic aci 01 M phenol 0.01 M pynuvic acid 0001 M hydrogen peroxide Celor change Light red Light yelow Light orange Lipt green Rank the solutions by increasing order c,ir acid strongm T View Available Hints) rank "im "equi·alen, overlap them. with the highest 80Explanation / Answer
The universal indicator help us to find the relative acidity/basicty of some chemicals. It has the ability to show the colour change according to the ph values of the solution. The follwing table can be used to understand the relative acidity/basicty strength.
pH (1to 2) : Red
pH (3 to 5) : orange
pH (5 to 6) : yellow
pH (7) : green
pH (8 to 9) : blue
pH (10) : navy blue
pH (11 to 12) : purple
pH (13 to 14) : violet
Now according to the table 0.001 M lactic acid having light red colour will be the most acidic, next will be 0.01 M nitrous acid (light orange) and then 0.01 M phenol (light yellow) and least acidic 0.001 M hydrogen peroxide (light green).
Hence the answer is according to the increasing acid strength:
0.001 M hydrogen peroxide < 0.01 M phenol < 0.01 M nitrous acid < 0.001 M lactic acid
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