For mn3+, write an equation that shows how the cation acts as an acid.

The equation that shows Mn³⁺ acts as an acid is: [Mn(H₂0)]³⁺ + H₂0 – [MnOH(H₂0)₅]²⁺H₃0⁺

Acid can be defined in so many ways and its definition is based on different theories.

However, Acid can be defined based on the following theories:

Lewis theory: This theory was proposed by Gilbert N. Lewis in 1923. According to this theory, an acid can be defined as any substance that can accept a pair of electron to electron-rich species. Some of the Example of acid as defined by Lewis includes BF₃, SO₃

Bronsted-Lowry theory: This theory was proposed by Johannes Nicolaus Brønsted and Thomas Martin Lowry in 1923. Both chemists proposed that any compound that can donate a proton to another compound is an acid. They also suggests that a base is any compound that accepts a proton.

Arrhenius theory: This theory was introduced by Svante Arrhenius in 1887. According to this theory, an acid can be described as a substance that can dissolve in water to produce electrically charged atoms. Some Examples of Arrhenius acids include HNO₃, HBR, and H₂SO₄

However, some of the properties of acids include:

Therefore, the equation that shows Mn³⁺ acts as an acid is: [Mn(H₂0)]³⁺ + H₂0 – [MnOH(H₂0)₅]²⁺H₃0⁺

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