Question

Which sentence correctly describes a solution with a pH lower than the pH of distilled water?

Answer 1

Answer : The correct option is, The solution is acidic.

Explanation :

pH : It is defined as the negative logarithm of the hydrogen ion or hydronium ion concentration.

pH measures the acidity and basicity of the solution.

As we know that the pH of neutral solution (distilled water) is, 7

The pH of the acidic solution is, less than 7

The pH of the basic solution is, more than 7

As per question, the solution is acidic when a solution with pH lower than the pH of distilled water.

Hence, the correct option is, The solution is acidic.

Answer 2

Answer: The correct answer is option (C)

Explanation: The pH of a solution is defined as the amount of hydrogen ion that is present in a particular solution. The pH value is used to detect whether a solution is acidic or basic in nature, This value of pH usually ranges from 0 to 14 which is commonly known as the pH scale.

The acidic solution has a pH of less than 7.

On the other hand, if the value of pH is greater than 7, then it is an alkaline or basic solution.

A pure distilled water has a pH value of 7, but in nature, it has a pH of 5.8, which is slightly acidic as it often found to be mixed with carbon dioxide.

So a solution whose pH is less than 5.8 will obviously be an acidic solution.

Thus, the correct answer is option (C).