Your two equations are not balanced and we can't do anything with them until they are.
For example, #1.
You have 2A on the left and 2A on the right. You have 2/3 C2 which is 4/3 C on the left but 3 on the right. Are you sure that isn't 2A + 3/2 C2 = A2C3?
And #2 would be 2B + 3/2 C2 = B2C3?
I really need help with this I am really confused with the law, I have looked at multiple examples and I am still so confused, I know you can't give me the answer, but is there anyway you could please take me through this question step by step?
Use Hess's law and changes in enthalpy for the following to generic reactions to calculate (delta)H for the reaction 2A +2B2C3--> 2B +A2C3
2A + 2/3C2-->A2C3 (delta)H =-1874kJ
2B + 2/3C2--> B2C3 (delta)H=-285kJ
Thank you so much this would be so helpful to me.
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