Question

Помогите пожалуйста! химия определите степени окисление элементов в соединенияхNaCiO2, H3PO4, K2Cr2O7, Cl2, Al2O3, P2O5, NO2, N2O5, Cr2O3, SiO2​

Answer 1

H3PO4 - H+1, P+5, O-2
K2Cr2O7 - K+1, Cr+6, O-2
Cl2- cl0(простое вещество)
Al2O3- Аl+3, O-2
P2O5- P+5, O-2
NO2- N+4, O-2
N2O5- N+5, O-2
Cr2O3- Cr+3, O-2

Answer 2

+1 -4 +7 -2

Na C I O2 ;

+1 +5 -2

H3 P O4 ;

+1 +6 -2

K2Cr2O7;

0

Cl2;

+3 -2

Al2 O3;

+5 -2

P2 O5;

Степень окисления N в NO2 составляет +3 . Степень окисления O в NO2 составляет -3/2 .

+5 -2

N2 O5;

+3 -2

Cr2O3;

+4 -2

Si O2.

Answer 3

Oxidation States of Elements in Compounds

Here are the oxidation states of the elements in the given compounds:

1. NaClO2: - Sodium (Na) has an oxidation state of +1. - Chlorine (Cl) has an oxidation state of +5 [[1]].

2. H3PO4: - Hydrogen (H) has an oxidation state of +1. - Phosphorus (P) has an oxidation state of +5. - Oxygen (O) has an oxidation state of -2 [[2]].

3. K2Cr2O7: - Potassium (K) has an oxidation state of +1. - Chromium (Cr) has an oxidation state of +6. - Oxygen (O) has an oxidation state of -2 [[3]].

4. Cl2: - Chlorine (Cl) has an oxidation state of 0. In its elemental form, chlorine exists as Cl2, where each chlorine atom has an oxidation state of 0 [[4]].

5. Al2O3: - Aluminum (Al) has an oxidation state of +3. - Oxygen (O) has an oxidation state of -2 [[5]].

6. P2O5: - Phosphorus (P) has an oxidation state of +5. - Oxygen (O) has an oxidation state of -2 [[6]].

7. NO2: - Nitrogen (N) has an oxidation state of +4. - Oxygen (O) has an oxidation state of -2 [[7]].

8. N2O5: - Nitrogen (N) has an oxidation state of +5. - Oxygen (O) has an oxidation state of -2 [[8]].

9. Cr2O3: - Chromium (Cr) has an oxidation state of +3. - Oxygen (O) has an oxidation state of -2 [[9]].

10. SiO2: - Silicon (Si) has an oxidation state of +4. - Oxygen (O) has an oxidation state of -2 [[10]].

I hope this helps! Let me know if you have any further questions.