7. Nature of acids and bases

Question:

5 m.

Answer the following:

A teacher gives three unknown solutions to Sonia.

Solution X has a pH 8.5.
Solution Y tastes sour and pH is 2.
Solution Z has a pH 12 and feels slippery.

1. Which solution represents an acid? Give reason.

Solution Y with pH 2 is a strong acid with high concentration of \(H^+\) ions
Solution Z with pH 2 is a strong acid with high concentration of \(OH^-\) ions
Solution Z with pH 12 is a strong acid with high concentration of \(H^+\) ions
Solution Y with pH 2 is a strong acid with high concentration of \(OH^-\) ions

2. Which of the following solution is a strong base?

Solution Z is a strong base
Solution X is a strong base
Solution Y is a strong base
Both solution X and Y are strong base

3. Which of the following help to identify the whether the given solutions are acidic or basic?

Properties such as pH and colour
Properties such as pH, taste, and litmus test
Properties such as state of substance, taste and pH of the substance
Properties such as texture and colour of the substance

Login or Fast registration

Previous task

Exit to the topic

Next task

Send feedback

Did you find an error?

Send it to us!