What happened when the cola and borax solution was each added to the water? Is water...

What happened when the cola and borax solution was each added to the water? Is water a good buffering system? Why or why not, chemically speaking?

Expert Solution

The pH of pure water is 7. It means it is neutral. The pH of cola is less than 7.It ranges from 2-3. As its pH is less than 7 it is acidic in nature. The pH of borax is greater than 7, its pH range is from 9-10. As its pH is greater than 7,it is basic in nature.
The pH of water will go from 7(neutral) to 3.3 (acidic) when cola is added to the water. It means the water pH of water is decreased. The neutral solution is turned to acidic,when cola is added to water.
The pH of water will go from 7(neutral) to 8.9 (basic) when borax is added to the water. It means the water pH of water is increased. The neutral solution is turned to basic,when borax is added to water.
A buffer system is a solution which can resist a change in pH when acids or bases are added to it.
As per the definition of buffering system, even though if any acid or base is added to it, its pH should not change. But in the above two cases, the pH of water is changed.
So Water is not a good buffering system.

queen_honey_blossom answered 2 years ago

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