The oxalic acid is added in test tube and this reaction `Fe_((aq))^(3+) + SCN_((aq))^(-) hArr [Fe(SCN)]_((g))^(2+)` equilibrium, steered and remain the solution than what will the change in colour of solution ?

Explanation

The intensity of red colour of solution is decrease because the oxalate ion, `C_2O_4^(2-)` of oxalic acid is reacts with `Fe^(3+)` ion and decrease the concentration of `Fe^(3+)`. The reaction should be forward an red colour containing `[Fe(SCN)]_((aq))^(2+)` is decrease, the red colour decreases.