(12pts) Separation of Copper(II) and Bismuth(III) Ions Procedure Number and Ion Test Reagent or Technique Evidence of Chemical Change Chemical(s) Responsible for Observation [6] Cu2 NH4OH Deep blue solution [Cu(NH3)4]2 [7] Cu2 C-Test K4[Fe(CN)6] Red brown ppt K2[Fe(CN)6] [8] Bi3 NH4OH White ppt Bi(OH)3 [9] Bi3 C-Test Na2Sn(OH)4 Black ppt Bi (12pts) Enter the chemical equations for the test and the confirmation test.

attached below

Explanation:

write the chemical equations for the test  and confirmation test

i.e.

i)Chemical equation for main copper test

ii)Chemical equation for copper confirmation test

iii)Chemical equation for main bismuth test

iv) Chemical equation for bismuth confirmation test

attached below are the chemical equations for the test and confirmation test

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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