Question

a household cleaning compound is used to remove calcium carbonate from the surfaces . the compound reacts with the calcium carbonate to form soluble salt, carbon dioxide and water . what is the pH of this cleaning compound?

A)pH 2

B)pH 7

C)pH 10

D)pH14​

Answer 1

Answer:

a household cleaning compound is used to remove calcium carbonate from the surfaces . the compound reacts with the calcium carbonate to form soluble salt, carbon dioxide and water . what is the pH of this cleaning compound?

A)pH 2✔

B)pH 7

C)pH 10

D)pH14

Answer 2

The cleaning compund has pH 2 (option A).

Given:

The compound reacts with calcium carbonate (metal carbonate) to form salt, CO2 and H20.

• As we know the chemical reaction of metal carbonates goes as follows:

          Metal carbonates + Acid → Salt + Water + Carbon dioxide

• According to the process, when calcium carbonate interacts with an acid such as HCL, H2SO4, or HNO3, it generates a carbonate salt and water while releasing carbon dioxide.

• This occurs because when a more reactive element combines with a less reactive element, the less reactive element is displaced and the salt is formed.

Let's look at the pH table now.

1. Acid= pH 1 to pH 6.9 (Acidic)
2. Water= pH 7 (Neutral)
3. Base= pH 7.1 to pH 14 (Basic)

The chemical reaction can be denoted as follows:

Acid + CaCO3 → Carbonate Salt + H20 + CO2

• It can be assumed that the molecule reacted with an acidic substance because it produces salt, water, and carbon dioxide.

Hence, the pH of cleaning compound is 2.