I think these are the REDOX equations:
5) As2O3 + Cl2 + 3H2O >>>> H3AsO4 + HCl (<--done, is it right?)
6) Cu + HNO3 >>>> Cu (NO3)2 + NO + H2O
7) K2Cr2O7 + s + H2O >>>> KOH + Cr2 O3 + SO2
2006-12-11 10:51:54 · 5 answers · asked by truckin_90 2 in Science & Mathematics ➔ Chemistry
3 Cu + 8 HNO3 -----> 4 H2O + 2 NO + 3 Cu(NO3)2
2K2Cr2O7 + 4H2O + 3S ---> 3SO2 + 4KOH + 2Cr2O3
:> peace
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2006-12-12 08:14:53 · answer #1 · answered by Anonymous · 8⤊ 0⤋
well
5= As2O3 + 5 H2O + 2 Cl2 ==> 4 HCl + 2 H3AsO4
6= it can't be done
7= give me a minute lol
2006-12-11 11:14:56 · answer #2 · answered by Arthur 1 · 0⤊ 0⤋
6) Cu + 2HNO3 ---> Cu(NO3)2+ H2
It's the way Hydrogen gas is made from Nitric acid.
The other ones have been done, so I won't add them.
2006-12-11 12:00:20 · answer #3 · answered by yrefferj 1 · 0⤊ 0⤋
3 Cu + 8 HNO3 -----> 4 H2O + 2 NO + 3 Cu(NO3)2
2K2Cr2O7 + 4H2O + 3S ---> 3SO2 + 4KOH + 2Cr2O3
2006-12-11 11:22:02 · answer #4 · answered by pkababa 4 · 0⤊ 4⤋
7) => 2K2Cr207 + 3S + 2H20 ----> 4KOH + 2Cr2O3 + 3SO2
2006-12-11 11:45:07 · answer #5 · answered by sd1968 1 · 0⤊ 0⤋