Question

12.You are given four test tubes, test tube A contains milk in water, B contains

baking soda, C contains vinegar and D contains glucose solution. Red litmus is

added to all the test tubes and identify in which test tube the litmus changes

to blue. Discuss.​

Answer 1

Answer:

t

Explanation:

Answer 2

Answer:

Red(Acidic) :- A) milk in water

C) contains vinegar

Blue(base) :- B) baking soda

Salt(neutral) :- D) contains glucose solution

Explanation:

A) PH value of milk is 6.7 to 6.9, which is below neutral hence it is acidic

B) PH value of baking soda is around 8.3, which is basic.

C) PH value of vinegar is around 2.5, which is pretty acidic.

D) PH value of glucose solution is 6.97 to 7.84, which is around neutral.

(REMEMBER:- If a substance has a PH value of 1 to 7 then it is acidic. If a substance has a PH value of 7 to 14 then it is basic. And if a substance has a PH value of 7 then it is neutral)

Litmus paper turns blue to red when a substance is acidic.

Litmus paper turns red to blue to red when a substance is basic.

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