Pure Water
H2SO4
Sodium Carbonate
HCl
Answer is Right!
Answer is Wrong!
The correct answer is A. Pure Water.
pH is a measure of how acidic or basic a substance is. A pH of 7 is neutral. A pH below 7 is acidic, and a pH above 7 is basic.
Pure water has a pH of 7 because it contains equal amounts of hydrogen ions (H+) and hydroxide ions (OH-). When these ions are in equal amounts, they cancel each other out and the solution is neutral.
H2SO4 is a strong acid with a pH of
0. HCl is also a strong acid with a pH of 1. Sodium carbonate is a base with a pH of 10.Therefore, the only substance that has a pH of 7 is pure water.