Question

1. Chromate-Dichromate Equation: 2G002 +2H* = Cr2O +H30 Observations Explanation (LeChatelier's Principle) (1)H2SO4 (aq) yellow-alonge addition color formed (2)NaOH (aq) addition still yellow and ofter 20 min lit is clear

Answer 1

Le-Chatelier's Principle- It states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change to de establish on equilibriuri) 20004² + 2H+ -- C,072 + H2O 1) Addition of H2SO4(99) : AddiHon of 12504 (aq) will lead to increase in concentration of Ht on reactant side (i.e. left hand side) of reaction. In order to Te establish equilibrium reaction will move to forward direction increasing concentration of crop 2 & Hgo. of) Addition of NOOH eaq) As Noo Heag) is a base, when it is added to the equillone it will consume acide concentration and thus lovenog concentration of reactant on left bend side. in order to reestablish equilibrium , geaction move 1 in backwoord direction and thus increasing cocentration of Croud - Co2 og tobo targe- (ولاهو Equation: 2660G2 + 2H+ yellow M250p(99) yellow-orange addition color formed due to This color formation is formation of Cr20d- je. încreased cone of NOOH (99) additton still yellow and after 20 min it is clear. yellow due to Cro62- color formation is increase in cone of