Question

can you correlate between pH and deterioration of Taj Mahal ?​

Answer 1

Answer:

Typical acid rain has a pH value of 4.0. Acid rain reacted with the marble (calcium carbonate) of Taj Mahal and this causing damage to heritage structure.

Marble and limestone both consist of calcium carbonate (CaCO3), a salt derived from the weak acid H2CO3. The reaction of a strong acid with a salt of a weak acid goes to completion. An acid reacts with a metal carbonate to produce a salt along with carbon dioxide and water.

Since a salt is produced, a change of pH takes place. The pH if the salt so formed will be around 7.