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oliveiraedvani
@oliveiraedvani
October 2020
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calcule o NOX dos elementos grifados nos composto abaixo.
a)Na2CO3
b)H3 PO4
c) HMnO4
d)AgNO3
e)SF6
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Freddysc
A soma de todas as cargas tem que ser zero.
a) Na2(1+) C(x) O3(2-)
C = -6+2 = +4
b) H3(1+) P (x) O4(2-)
P = -8+3 = +5
c) H(1+) Mn(x) O4(2-)
Mn = -8 +1 = +7
d) Ag(1+) N(x) )3(2-)
N = -6+1 = +5
e) S(x) F6(-1)
0 = x -6 -> x = +6
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obs: tem que justificar a alternativa correta
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a) Na2(1+) C(x) O3(2-)
C = -6+2 = +4
b) H3(1+) P (x) O4(2-)
P = -8+3 = +5
c) H(1+) Mn(x) O4(2-)
Mn = -8 +1 = +7
d) Ag(1+) N(x) )3(2-)
N = -6+1 = +5
e) S(x) F6(-1)
0 = x -6 -> x = +6