Question

a student was given for unknown colourless samples labelled a ,b, c and d and asked to test the pH using pH paper. he observed that the colour of PH paper turned to light green, dark red, light orange and dark blue with samples a ,b ,c and d respectively. arrange them in increasing order of PH value

Answer 1

HEYA!!
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➡Ph stands for " Potenz Hydrogen " . Potenz is a German word that means POWER .

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(1). Sample A :- Light green

Ph range :- 6-8 { neutral }


(2). SaMple B :- Dark Red

Ph range :- 0-2 { strongly Acidic }

(3). Sample C :- Light orange

Ph range :- 5-6 { weak acid }

(4). Sample D :- Dark Blue

Ph range :- 13-14 { strong base }

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➡Arranging Ph values in increasing order

$= > > b < c < a < d$


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Answer 2

Hope   it   help   you . !!!!!!!