Question

Расставьте степени окисления.

Answer 1

$Ni^{0}+ H^{+}_{2}SO_{4}=Ni^{+2}SO_{4}+H^{0}_{2}$

$2Cr^{0}+ 3H^{+}_{2}SO_{4}=Cr^{+3}_{2}(SO_{4})_{3}+3H^{0}_{2}$

$Co^{0}+ H^{+}_{2}SO_{4}=Co^{+2}SO_{4}+H^{0}_{2}$

$Fe^{0}+ H^{+}_{2}SO_{4}=Fe^{+2}SO_{4}+H^{0}_{2}$