A) Cu + 2Ag+=Cu2+ 2Ag (B)NH4 2NO2= N2+2H2O (C)N2+3H2= 2NH3 ( D) 2CrO42- +2H+ = Cr2O7- +H2O (E) C2H4 + H2= C2H6
2006-10-23 12:05:30 · 2 answers · asked by BILLY D 1 in Science & Mathematics ➔ Chemistry
(D)
Did u copy the qn wrongly?
Oxidation state of Cr2O7 shld be -2 and not -1.
Oxidation state of Cr doesnt change in (D).Remains at 6+
2006-10-23 12:16:39 · answer #1 · answered by luv_phy 3 · 0⤊ 0⤋
(A) Sulfur is oxidised to sulfur dioxide. (C) The iron loses electrons to form iron (II) ions so it somewhat is oxidised, on a similar time as the copper (II) ions will earnings electrons forming copper metallic so as that they are decreased. (D) Photosynthesis includes somewhat some oxidation and help reactions, which is composed of the help of carbon dioxide. (E) while iron combines with sulfur, electrons pass from the iron, oxidation, to the sulfur, help. (B)The formation of water in the time of the neutralisation reaction between sodium hydroxide and nitric acid does no longer contain an oxidation or a help.
2016-12-08 19:55:31 · answer #2 · answered by ? 4 · 0⤊ 0⤋