Based on the complete and balanced reaction below, what is the charge for copper (Cu)?
You must provide two pieces of evidence to support your claim.
Look at the reaction below to answer the question. Remember that
copper (Cu) is a transition metal and it can have different possible
charges:
2NaCl + Cu(NO3)2 --> 2NaNO3 + CuCl2

the correct answer is answer a. a mixture

no other options make sense

hope this

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a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.