Предмет: Химия, автор: litvoliya

Умоляююююююю.Помогите прошу по химии

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Ответы

Автор ответа: FUNNYCUNT
0

1.

Na2So4 (Na⁺², S⁺⁶, O⁻⁸)

PO4 (P⁺⁵, O⁻⁸) ⁻³

Cl2 (Cl⁰)

PCl5 (P⁺⁵, Cl⁻⁵)

MnO (Mn⁺², O⁻²)

2.

Hg²⁺(NO3)2 + Ni⁰ = Ni²⁺(NO3)2 + Hg°

Hg²⁺ +2e --->  Hg⁰ (окисление)

Ni⁰ - 2e ---> Ni²⁺ (восстановление)

3.

10Fe⁺²SO4 + 2K⁺¹Mn⁺⁷O4⁻² + 8H2SO4 → 5Fe2⁺³(SO4)3 + 2Mn⁺²SO4⁻² + K2SO4 + 8H2O

2Fe⁺² -2e ---> Fe2⁺³ ║2║               ║5║ - восстановление

                                           ║10 ║  

Mn⁺⁷ + 5e ---> Mn⁺²  ║5║                ║2║ - окисление

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