56 157
Assignments Done
99%
Successfully Done
In January 2018
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Inorganic Chemistry Question for Haley

Question #4751
A blue Cu (II) cation salt solution was mixed with a green Ni (II) cation salt solution and an aqua colored solution resulted. Is this a chemical change or a physical change?
Expert's answer
This is a physical change or a chemical change depending on the concrete example. For example, we can take Copper(II) sulfate - CuSO4 (gives a bright blue solution) and Nickel(II) nitrate – Ni(NO3)2 (gives a green solution). The mix of these salts in solution gives another color – not bright blue and another shade of green. But no chemical reactions occur.
Ni(NO3)2 + CuSO4 -> Ni(NO3)2 + CuSO4
CuSO4 is still CuSO4, Ni(NO3)2 is still Ni(NO3)2. There is no reaction between soluble salts possible if there is no gas or solid as a product.
But when it comes to another case for instance Copper(II) sulfate - CuSO4 (gives a bright blue solution) and Nickel(II) carbonate – NiCO3 (gives a green solution). The mix of solutions gives another color and this is the result of chemical change, because insoluble CuCO3 is formed.
CuSO4 + NiCO3 -> NiSO4 + CuCO3↓

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be first!

Leave a comment

Ask Your question