For the Cu + HNO3 reaction, what experimental evidence do you have that your pro
ID: 889927 • Letter: F
Question
For the Cu + HNO3 reaction, what experimental evidence do you have that your products match what is given in the chemical equation (consult with library/internet)? What is the key indicator that cuo + H2S04 reaction has occurred? The key indicator that a decomposition of cu(OH)2 reaction took place is that the solid changes color. Are your observed colors for reactant and product consistent with what is expected based on the chemical equation given (consult with library/internet)? What happened to the aluminum metal in the CuS04 + Al reaction? For each reaction type (among reactions 1-5), find an alternative example (any balanced reaction) using literature sources of your choice.Explanation / Answer
1. Chemical reaction
3Cu(s) + 2NO3-(aq) + 8H+(aq) --> 3Cu2+(aq) + 2NO(g) + 4H2O
Experimental evidence:
a) The liquid/solution turns from colorless to deep blue, indicating the pressence of Cu2+.
b) You can see bubbling in the liquid surface and the appearance of a brown/dun gas, indicating the formation of NO.