5. River water, tap water, distilled water.Out of the above three, whi

1.	5. River water, tap water, distilled water.Out of the above three, which will form maximum length of foam / lather after shaking samplesin test tube? Justify your answer.
Answer» Answer: Test tube A contains distilled water which is considered as soft water which has no free ions, and thus the length of foam in test tube A will be longest. Test tube B contains UNDERGROUND water which contains ions like Mg +2 ,Ca +2 , ETC. which reacts with soaps to form salts of fatty acids called scum which is insoluble in water and thus the length of foam will be less as compared to that in test tube A. Test tube C contains distilled water with CaSO 4 , which contains Ca +2 ions which reacts with soaps to form salts of fatty acids, i.e., scum and thus the length of foam in test tube B will be less as compared to that in test tube A. Hence the length of foam in test tube A will be longest. *PLEASE* *MARK* ME AS *BRAINLIST*

5. River water, tap water, distilled water.Out of the above three, which will form maximum length of foam / lather after shaking samplesin test tube? Justify your answer.

Answer»

Answer:

Test tube A contains distilled water which is considered as soft water which has no free ions, and thus the length of foam in test tube A will be longest.

Test tube B contains UNDERGROUND water which contains ions like Mg

,Ca

, ETC. which reacts with soaps to form salts of fatty acids called scum which is insoluble in water and thus the length of foam will be less as compared to that in test tube A.

Test tube C contains distilled water with CaSO

, which contains Ca

ions which reacts with soaps to form salts of fatty acids, i.e., scum and thus the length of foam in test tube B will be less as compared to that in test tube A.

Hence the length of foam in test tube A will be longest.

PLEASE MARK ME AS BRAINLIST

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