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Króm és mangán

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Króm és mangán

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Króm és mangán elemek és vegyületei - Szervetlen kémia

Created by

Endre Kovács
Endre Kovács
Hungary

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Króm és mangán
 

Króm és mangánOnline version

Króm és mangán elemek és vegyületei - Szervetlen kémia

by Endre Kovács
1

Mi a króm vegyértékelektronszerkezete?

2

Hány maximális vegyértékelektront képes a króm leadni?

3

Milyen színű a Cr³⁺-iont tartalmazó Cr₂O₃ vegyület?

4

Milyen színű a kromátion (CrO₄²⁻)?

5

Milyen közegben alakul a kromát dikromáttá?

6

Mi keletkezik az (NH₄)₂Cr₂O₇ bomlásakor?

7

Mi a „kis tűzhányó” kísérlet lényege?

8

Milyen szerepe van a krómnak az iparban?

9

Mi volt a CrO₂ alkalmazása a 20. században?

10

Hány vegyértékelektronja lehet maximum a mangánnak?

11

Mi a Mn²⁺-ion jellemző oldatbeli színe?

12

Milyen színű a MnS csapadéka?

13

Milyen színű a MnO₂ (barnakő)?

14

Milyen színű a manganátion (MnO₄²⁻)?

15

Milyen közegben alakul ki a manganátion?

16

Milyen színű a permanganátion (MnO₄⁻)?

17

Mi a KMnO₄ egyik laboratóriumi felhasználása?

18

Mi történik a KMnO₄ hevítésekor?

19

Milyen szerepet játszik a MnO₂ a Leclanché-elemekben?

20

Milyen gyakorlati alkalmazása van a MnO₂-nek?

 
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