Question

Arrange the given list of acids and bases in ascending order of their pH.
Water, limewater, vinegar, gastric juices

• A. Gastric juices < vinegar < water < limewater
• B. Vinegar < water <gastric juices < limewater
• C. Vinegar < limewater < water < gastric juices
• D. Vinegar < gastric juices < water < limewater

Answer 1

The correct option is A

Gastric juices < vinegar < water < limewater

pH value of a substance tells us whether the given substance is acidic or alkaline in nature. The approximate pH value of the given substances is mentioned in the table below.
$$\begin{array}{cc}\text{Substance}& \text{pH value}\\ \text{Gastric juices}& 1\\ \text{Vinegar}& 3\\ \text{Water}& 7\\ \text{Limewater}& 11\end{array}$$
Hence, the ascending order of these substances with respect to their pH is gastric juices < vinegar < water < limewater.