a) +I x -II
K2CrO4
2*(+I)+x+4*(-II)=0
+II+x+(-VIII)=0
x=+VI
K(+I) Cr(+VI) O(-II)
b) +II x -II
Cu(NO3)2
+II+2x+6*(-II)=0
2x=+X /:2
x=+V
Cu(+II) N(+V) O(-II)
c) x -II
CO3 2-
x+3*(-II)=-II
x=+IV
C(+IV) O(-II)
d) +I x -II
H2SO4
H(+I) S(+VI) O(-II)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
a) +I x -II
K2CrO4
2*(+I)+x+4*(-II)=0
+II+x+(-VIII)=0
x=+VI
K(+I) Cr(+VI) O(-II)
b) +II x -II
Cu(NO3)2
+II+2x+6*(-II)=0
2x=+X /:2
x=+V
Cu(+II) N(+V) O(-II)
c) x -II
CO3 2-
x+3*(-II)=-II
x=+IV
C(+IV) O(-II)
d) +I x -II
H2SO4
2*(+I)+x+4*(-II)=0
+II+x+(-VIII)=0
x=+VI
H(+I) S(+VI) O(-II)