Which oxide CrO3 or Cr Ois more basic in water? Why
CrO3 (chromium trioxide) is more acidic in water than Cr O (chromium(III) oxide).
The basicity or acidity of an oxide in water depends on its reaction with water molecules. When an oxide reacts with water, it can either donate hydroxide ions (OH-) or accept hydronium ions (H3O+).
CrO3 reacts with water to form chromic acid (H2CrO4), which is a strong acid. In this reaction, CrO3 accepts hydronium ions, thereby acting as an acid. Therefore, CrO3 is considered acidic in water.
On the other hand, Cr O does not readily react with water to form an acidic solution. Instead, it forms a basic solution by generating hydroxide ions.
Overall, CrO3 is more acidic in water, while Cr O is more basic.
To determine which oxide, CrO3 or CrO, is more basic in water, we need to consider their behavior when they come into contact with water.
CrO3 (chromium trioxide) is an acidic oxide. When it reacts with water, it forms chromic acid (H2CrO4), which is a strong acid. The reaction can be represented as follows:
CrO3 + H2O → H2CrO4
On the other hand, CrO (chromium oxide) is a basic oxide. When it reacts with water, it forms chromic hydroxide (Cr(OH)3) or sometimes referred to as chromium(III) hydroxide. The reaction can be represented as follows:
CrO + 3H2O → Cr(OH)3
Based on these reactions, we can conclude that CrO3 is acidic and CrO is basic in water.
Therefore, CrO (chromium oxide) is the more basic oxide in water compared to CrO3 (chromium trioxide).