What is the effect of pH on the solution of`K_(2)Cr_(2) O_(4)`solution ?

Explanation

To analyze the effect of pH on a solution of potassium dichromate (K₂Cr₂O₇), we can follow these steps:

### Step 1: Understand the Dissociation of K₂Cr₂O₇
Potassium dichromate (K₂Cr₂O₇) dissociates in solution to form potassium ions (K⁺) and dichromate ions (Cr₂O₇²⁻):
\[ K_2Cr_2O_7 \rightarrow 2K^+ + Cr_2O_7^{2-} \]

### Step 2: Identify the Color of Dichromate Ions
In acidic conditions (pH < 4), the dichromate ion (Cr₂O₇²⁻) is present and imparts an orange color to the solution.
...