17.21—Dichromate(VI) ions can be converted into chromate(VI) ions through the equilibrium Cr2O7^2− + H2O ⇌ 2CrO4^2− + 2H+

Know that dichromate(VI) ions can be converted into chromate(VI) ions through the equilibrium Cr2O7^2− + H2O ⇌ 2CrO4^2− + 2H+.

Use —dichromate(vi) ions can be converted into chromate(vi) ions through the equilibrium cr2o7^2− + h2o ⇌ 2cro4^2− + 2h+ to connect the rule to the data and decision in the question.

This matters because —dichromate(vi) ions can be converted into chromate(vi) ions through the equilibrium cr2o7^2− + h2o ⇌ 2cro4^2− + 2h+ determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —dichromate(vi) ions can be converted into chromate(vi) ions through the equilibrium cr2o7^2− + h2o ⇌ 2cro4^2− + 2h+ to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —Dichromate(VI) ions can be converted into chromate(VI) ions through the equilibrium Cr2O7^2− + H2O ⇌ 2CrO4^2− + 2H+ is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.