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# Thermodynamics

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1. I don't understand where the extra minus cane from when it says -(-349*2) can someone explain this to me please?
2. You need to show the rest of the page. Was that process exothermic?
3. (Original post by Ann_Onymous)
I don't understand where the extra minus cane from when it says -(-349*2) can someone explain this to me please?
looks like -349 is the 1st electron affinity of Cl, as there are 2 Cl, you multiply this by 2, which they havent done in the cycle diagram, but have doen in the working also, the minus infront of (-349*2) is because you are going against H6's arrow
4. (Original post by thatawesomekid)
looks like -349 is the 1st electron affinity of Cl, as there are 2 Cl, you multiply this by 2, which they havent done in the cycle diagram, but have doen in the working also, the minus infront of (-349*2) is because you are going against H6's arrow
Oh thats why thank you
5. (Original post by rose:))
You need to show the rest of the page. Was that process exothermic?
I'm not sure of it was exothermic or endothermic and the next page shows a different example.

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