What are the colour of pH paper , approximate pH value, nature of substance for the following solutions :-
Saliva (before meal ) , saliva (after meal) , lemon juice, colourless aerated drink , carrot juice , coffee, tomato juice , tap water, 1M NaOH , 1M HCl

Open in App

Solution

Value and color of ph paper would be approximately around:
✯ Before meal: 7 { green }
✯ After meal: 5 { yellow }
✯ Lemon juice: 2 { pink }
✯ Colorless aerated drink: 6 { lime green }
✯ Carrot juice: 5.6 { yellow / green }
✯ Coffee: 5 { yellow }
✯ Tomato juice: 4{ beige }
✯ Tap water: 7 { green / lime green }
✯ NaOH: 14 { purple }
✯ HCl: 1 { red }

Suggest Corrections

Similar questions

Q. Three students were given colourless liquids of water, lemon juice and mixture of water and lemon juice After testing these liquids with pH paper a sequence in colour change of pH paper was reported Which is the correct sequence?

The pH of milk, black coffee, tomato juice, lemon juice and egg white are 6.8, 5.0, 4.2, 2.2 and 7.8 respectively. Calculate corresponding hydrogen ion concentration in each

Q. A student tests the

p H

of pure water using a

p H

paper. It shows the green color. If a

p H

paper is used after adding lemon juice to water, what color will be observed?

Q. Four students were given colourless liquids A,B,C of water, lemon juice and a mixture of water and lemon juice respectively. After testing these liquids with pH paper, following sequence in colour change of pH paper were reported :

I. Blue, Red and Green II. Orange, Green and Green
III. Purple, Red and Green IV.Green, Red and Red

The correct sequence of colours observed is-

Four student (a), (b), (c) and (d) measured the pH values of water, lemon juice and sodium bicarbonate solution. What is the correct decreasing order of pH values?

Join BYJU'S Learning Program

What are the colour of pH paper , approximate pH value, nature of substance for the following solutions :-Saliva (before meal ) , saliva (after meal) , lemon juice, colourless aerated drink , carrot juice , coffee, tomato juice , tap water, 1M NaOH , 1M HCl

What are the colour of pH paper , approximate pH value, nature of substance for the following solutions :-
Saliva (before meal ) , saliva (after meal) , lemon juice, colourless aerated drink , carrot juice , coffee, tomato juice , tap water, 1M NaOH , 1M HCl