Question

Which characteristic would you predict from a solution that has a pH of 5?

sour taste
very high concentration of hydroxide ions
slippery feeling
very low concentration of hydronium ions

Answer 1

With a pH of five, it would mean that this substance is a weak acid one would also it expect it would be sour.

Answer 2

Answer : The correct option is, sour taste

Explanation :

Acid : It is a substance that has ability of donating proton or hydrogen ion or hydronium ion, $H^+$.

The properties of an acid are :

• Acids are sour in taste.
• The texture of an acid solution is sticky.
• It changes the color of the litmus paper to red.
• It react with a metal to give compound and hydrogen gas.
• The pH of an acid is less than 7.

Base : It is a substance that has ability of donating hydroxide ion, $OH^-$.

The properties of an base are :

• Base are bitter in taste.
• The texture of an base solution is slippery.
• It changes the color of the litmus paper to blue.
• It does not react with a metal.
• The pH of a base is more than 7.

As per question, the pH is 5 that means the solution is acidic in nature and follow the properties of an acid. So, the pH = 5 has the sour taste characteristic. While the other options are the properties of a base.

Hence, the correct option is, sour taste