Tolong bantu kak yang pandai kimia, sy tak paham lah kimia.

Penjelasan:

a. NH₄⁺

N (+4) = 1

N = -3

b. H₃PO₄

(+3) + P + (-2 x 4) = 0

P -5 = 0

p = +5

c. Ca (ClO₃)₂

+2 +2Cl + (-2 x 6) = 0

2Cl -10 = 0

Cl = +10

Cl = +5

d. H₂C₂O₄

+2 + 2C + (-2 x 4) = 0

2C -6 =0

2C = +6

C = +3

e. Cu(NO₃)₂ → Cu²⁺ + NO₃²⁻

Cu = +2

NO₃²⁻

N + (-2 x 3 ) = -2

N -6 = -2

N = -4

f. Fe₂(SO₃)₃ → Fe³⁺ + SO₃²⁻

Fe₂(SO₃)₃

2 Fe + (-2 x 3) =0

2 Fe -6 = 0

2Fe = +6

Fe= +3

Fe₂(SO₃)₃

(3 x 2) + 3S + (-2 x 9) = 0

6 +  3S  - 18 = 0

3S -12 = 0

3S=+12

S = +4

S = +4

g. NH₄NO₂ → NH₄⁺ + NO₂⁻

NH₄⁺

N + 4 = +1

N = -3

NO₂⁻

N (-2 x 2 ) = -1

N -4 = -1

N = +3

h. S₂O₇²⁻

2S + (-2 x 7) = -2

2S -14 = -2

2S = +12

S = +6

Semoga membantu 🙂

*Kalo ada yang salah komen aja, tulisan yang miringnya kurang jelas soalnya