I just dont understand what the things in the brackets meant. And then whats the difference?
2007-09-06 09:26:50 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Cu+ is a rather unstable ion, and it tends to react with itself to form copper metal and Cu2+, which is much more stable. The difference between the ions is only one electron, but it has a large efect on their properties. Cu+ is colourless, and Cu2+ is blue in solution.
The items in brackets are the oxidation states, which are the same as the charge if you put a "+" after them.
2007-09-06 09:33:13 · answer #1 · answered by Gervald F 7 · 2⤊ 1⤋
Common oxidation states of copper include the less stable copper(I) state, Cu+; and the more stable copper(II) state, Cu2+, which forms blue or blue-green salts and solutions. Under unusual conditions, a 3+ state and even an extremely rare 4+ state can be obtained. Using old nomenclature for the naming of salts, copper(I) is called cuprous, and copper(II) cupric.
2007-09-06 09:35:01 · answer #2 · answered by Anonymous · 0⤊ 0⤋
cu (1) = Cu + so its lost one electron and has a valency of 1
cu(II)=Cu 2+ so its lost two electrons and has a valecy of two
so so42-
will combine with cu2+
to form cu so4
and cl- will combie with cu+ to form cu cl
and cu 2+ will form cu cl 2
2007-09-06 23:32:52 · answer #3 · answered by ~*tigger*~ ** 7 · 0⤊ 0⤋
What you have there is cuprous oxide, or Cu(I) Oxide. How that's got here upon: 2.5g of copper is 0.03934 moles. 0.31 g of Oxygen is 0.01936 moles. this suggests for each mole of copper reacted, one-0.5 mole of oxygen is used. as a effect we get the two copper: one million Oxygen, meaning our Copper has a unmarried electron to apply in a bond, so we get Cu2O, it is cuprous oxide.
2016-10-10 02:06:47 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Cu(I) has a charge of +1
Cu(II)has a charge of +2
2007-09-06 09:33:26 · answer #5 · answered by science teacher 7 · 0⤊ 0⤋
1 and 2 ......
2007-09-06 09:31:40 · answer #6 · answered by Fishermans Friend 2 · 0⤊ 0⤋
Cu (I) has 1 valence electron giving Cu2O.... 'Cuprous oxide' or 'Red Copper oxide'.
Cu (II) has 2. valence electrons giving CuO.... 'Cupric oxide'....or 'Black Copper oxide' (a black crystal).
2007-09-06 10:14:21 · answer #7 · answered by Norrie 7 · 0⤊ 0⤋
its to do with there oxidation states
they react slightly differently due to needing different amounts of electrons when reacting
2007-09-07 03:25:01 · answer #8 · answered by coy carp 3 · 0⤊ 0⤋
copper found on different lines(wavelengths)
2007-09-06 09:34:19 · answer #9 · answered by Anonymous · 0⤊ 2⤋