Question

Which of the following is true about acids? . A. Acids give foods a bitter taste. . . B. Aqueous solutions of acids conduct electricity. . . C. Acids have a pH value greater than 7. . . D. all of the above .

Answer 1

Answer : The correct options is, (B) Aqueous solutions of acids conduct electricity.

Explanation :

Acid : It is a substance that has ability of donating proton or hydrogen 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.
• An aqueous solution of an acid conduct electricity.
• The pH value of 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.
• An aqueous solution of an base also conduct electricity.
• The pH value of base is greater than 7.

Hence, the correct options is, (B) Aqueous solutions of acids conduct electricity.

Answer 2

Acids are substances that have a rich concentration of the proton H+. Acids are bitter in taste and have a pH less than 7. Substances with pH greater than 7 are basic solutions while that at 7 are called neutral solution. The answer to this problem is A. Acids give foods a bitter taste.