What is the pH level of ammonia?

The correct answer is 11.6, which indicates that ammonia is a basic compound. Ammonia (NH₃) is a weak base commonly found in household cleaning products and fertilizers. Its pH level, when dissolved in water, can reach approximately 11.6, suggesting that it can significantly increase the pH of a solution, making it alkaline.

In the context of ammonia, a basic pH stems from the compound's ability to accept protons (H⁺ ions) from water, forming ammonium ions (NH₄⁺) and hydroxide ions (OH⁻). The presence of hydroxide ions is what contributes to the higher pH, reflecting greater alkalinity. Understanding the pH level of ammonia is crucial for applications in various fields, including chemistry and environmental science, as it affects reactions and impacts biological systems where pH balance is essential.