A solution has a Ph of 5.0. Is this solution an acidic or a basic solution? Whic

Question

A solution has a Ph of 5.0. Is this solution an acidic or a basic solution? Which ion is present in the larger amount. H^+ or OH^-? If this is not a buffer solution, what happens to the pH if you add a small amount of base to the solution? Phenol red is an indicator used to determine the pH in swimming pools. The ideal pH of swimming pool water is around 7.5. If the pH of a sample of water is 8.2, would you add acid or base to adjust the pH? Explain. On the pH scale below, w rite the names of the household products tested during the experiment with their appropriate pH values (write sideways). Criticize the statement: "We must reduce the pH of our rivers to zero."

Explanation / Answer

5.

if pH = 5

then this must be acidic since pH < 7

b.

since it is acidic ,then H+ must be in reater concentration than OH- according to

Kw = [H+][OH-]

c.

if we add a small amount of base, then th pH changes, it acually increases.

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