Question

4. Write the balanced equation for CH4+Cl2„_CH2Cl2+HCl6. For the reaction in problem 4, Heat of Reaction = -118.3 kcal/mol. Identify whether this is an exothermic or endothermic reaction. Calculate the Heat of Reaction when 6.00 g of Cl2 are used in the reaction.

Answer 1

CH4+ 2Cl2 --> CH2Cl2 + 2HCl + heat

The - sign for delta H tells you it is an exothermic reaction. Delta H is -118.3 kcal/mol which tell you that 137.8g(4 x35.45) of Cl2 gives 118.3 kcal. So how much will 6 g give you?

Answer 2

10kcal?