Lab 4 Introducing Equilibriunm Methyl orange indicator was u

Lab 4. Introducing Equilibriunm Methyl orange indicator was used in the chromate ion equilibrium illustrated below. Explain what changes would be observed in this reaction upon the addition of sulfuric acid. 1. 2 Cr042-(aq, yellow) + 2 Hor(aq) Cr2072(aq, orange) + 3H20(1)

Solution

As we add sulphuric acid, the reaction will go forward to achieve equilibrium because of le chatelier\'s principle ( When any system at equilibrium is subjected to change in concentration, then the system readjusts itself to partly counteract the effect of the applied change and a new equilibrium is established)

So, the solution will turn orange.