zinc is colorless when it dissolved in the solvent while when cuprum is added to the solvent, it becomes blue solution.why?
2007-05-29 19:34:31 · 5 answers · asked by budakkampung_ozai 1 in Science & Mathematics ➔ Chemistry
a. Zinc is not colorless. it is a shiny metal.
b. copper is not blue. it is a yellowish metal.
c. zinc hexacyanoferate is not colorless. trust me. especially not in water.
d. cuprum solutions in ethanol is not blue. wanna bet?
e. "dissolved in THE solvent". of course, the one and only solvent there is.
f. u most probably have sulfate ions (SO4 2-) in the solution. and since zinc sulfate solution in water is indeed colorless, addition of copper (II) ions will produce copper sulfate, which is indeed blue.
2007-05-29 19:44:37 · answer #1 · answered by chem_freak 5 · 0⤊ 2⤋
It's because of the displacement of the neutrons when the cuprum is added to the equation. This displacement is caused when neutrons react to the new chemical.
2007-05-29 19:46:32 · answer #2 · answered by Shep 2 · 0⤊ 0⤋
because Zn(+2)has 10 d electron so they can not be excited by one of visible colors i.e the visible light is not absorbed by Zn(+2) ions. While in case of Cu(+2) ion has one single electron in d sub-level so it can be excited by one of visible colors (orange) and the other colors which are not absorbed give the color of Cu(+2) ion) (blue).
2007-05-29 20:09:44 · answer #3 · answered by abd elmoniem m 2 · 3⤊ 0⤋
zn has filled d orbital in +2 means contain 10 electron in d-orbital while that of cu in +2 state has 9 d-electrons so d-d transitions takes place in cu so it is coloured and zn is not
2013-10-22 00:49:52 · answer #4 · answered by Zill E Huma 1 · 0⤊ 0⤋
Two words: Material Characteristics.
Doug
2007-05-29 19:39:43 · answer #5 · answered by doug_donaghue 7 · 0⤊ 1⤋