Define the degree of oxidation of bromine in bromide of potassium

What hydroxides shows amphoteric character

Specify not salt-forming oxides

Specify the acid oxides

Specify amphoteric oxides

Types of chemical reactions according to the mechanism of interaction

1. neutralizations, redox reactions, precipitations, complexations

264. The basis of the neutralization is the reaction:

1. Н ⁺ + OH^- → Н₂О

265. What element forms amphoteric oxides?

А) Al

А) Al₂O₃;ZnO

А) CO₂;P₂O₅

А) CO; NO

269. To define the base oxides ВеО,

A) ,

270. To define the acidic oxides: Na₂O, СоО, F , MnO₂, BaO, S , Si

A) SO_2, SiO₂,

271. To define the one-basic acids: Н₃РO₄, HCI, H₂MnО₄

A)

272. To define the two-basic acids:

A) ,

273. To define the three-basic acids: , H₃PО₄, ,

A) , H₃PО₄

274. Specify strong acid:

A) 1

275. Specify strong acids: H₂S0₄, H₂S, HJ, H₂SО₃. HCN, H₂C , HCI

A) H₂SО_4, HJ, HCI

276. Specify weak acids: CH₃COOH, НСlO₃, H₂CO₃, HNO₂, HBr, HJ, НClO₄

A) C COOH, C , HNО₂

277. The strongest oxygen containing chlorine acid:

A) HCl

А) Al(OH)₃

279. Define oxidation degree of nitrogen: N N₂H₄, NH₂OH

A) -3,-2,-I

280. Define oxidation degree of sulfur: SО₂, H₂S, Na₂SО₃, CS₂, H₂SО₄

A) +4,-2, +4, +4, +6

281. Define oxidation degree of Мn: МnО,

A) +2, +4, +3,+7

282. In what compounds nitrogen has oxidation degree +5

A)

283. In what compounds chromium has oxidation degree +6

1) ;2) С Оз; 3) Na 4) 5) Cr ; 6)

A) 1,5

284. In what compounds manganese has oxidation degree +7

A)

285. Characteristic degree of oxidation for copper: +1, +2, +3, +4, +6

A. +2

286. M aximum degree of oxidation for nitrogen

А) +5

А) -1)

290. Define the degree of oxidation of sulphur in Na₂SO₄

А) +6

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