Sulfur and oxygen in structure are similar

Test in chemistry for the first half of the year in grade 9 option 1

A1 substance that in aqueous solution dissociate by ions:

but) ( NH. 4 ) 2 SO. 4 ; b) FROMa. 3 ( PO. 4 ) 2 c) Caco. 3 ; d) Casio. 3 ;

A2 equation chemical reaction

H. 2 SO. 4 + 2Naoh → Na 2 SO. 4 + 2h. 2 O.

corresponds to the abbreviated ion equation:

+ -

a) h + oh \u003d h 2 o

+ -

b. ) N aoh \u003d na + oh

+ -

in) H. 2 SO. 4 \u003d H + H SO 4

g.) HSO. 4 - \u003d H + SO 4

A3 Sulfur oxidation degree in sulfuric acid

a) -2 b) +6 c) +4 g) 0

A4 sulfur and oxygen in the structure of the atom are similar:

a) the charge of the kernel;

A5 Mass fraction of sulfur in sulfuric acid is equal

a) 16.33%; b) 32.65%; c) 39.02% g) 98%.

A6. Magnesium nitrate formula:

but ) MG (NO 3) 2 b) Mg (NO 2) 2 V) Mg 3 n 2 g) Mn (NO 3) 2

A7 diluted sulfuric acid Do not interact

a) NaOH; b) mg; c) bacl 2 g) hg

A8 Degree of oxidation -3 Nitrogen exhibits in connection

a) N. 2 ABOUT 3 b) hno 3 c) N. 3 F d) NH 4 Cl.

A9 ammonia does not interact with

a) oxygen; b) hydrogen C) hydrochloric acid; d) water;

A10 Sulfur Oxide (IV) is able to react with

a) N. 2 O b) sn 4 c) N. 3 RO 4 d) So. 3

IN 1. In the conversion chain H 2 S \u003d\u003e s \u003d\u003e a \u003d\u003e so 3 \u003d\u003e Na. 2 SO. 4 .

Substance A ___________.

AT 2. Set compliance:

Source substances

Reaction products

1) KNO 3 →

A) n 2 + o 2 + h 2 o

2) NH. 4 No. 3 →

B) hno 3 + ZnSO. 4

3) Cu (NO 3) 2 + KOH →

C) KNO 2 + O 2

4) Zn (NO 3) 2 + H 2 SO4 →

D) znso. 4 + H. 2

E) Cu (OH) 2 ↓ + KNO 3

C1. What volume of oxygen (N.U.) is required for incineration of 3.4 kg. hydrogen sulfide?

C2. Using the electronic balance method in the reaction equation

Zn. + HCI => Znci. + H. 2

Chemistry testing for the first half of the year in grade 9

Option 2.

A1 The substance that in aqueous solution does not dissociate on the ions - this is:

a) Nano. 3 ; b) ki; c) nh. 4 No. 3 ; d) baso. 4 ;

A2 Abbreviated ion equation

+ 3 -

Al + 3oh \u003d Al (OH) 3 ↓

corresponds to the chemical reaction equation

but) Al 2 O. 3 + 3h. 2 SO. 4 \u003d Al 2 (So. 4 ) 3 + 3h. 2 O;

b. ) Al (NO 3) 3 + 3KOH \u003d Al (OH) 3 + 3KNO 3

in ) Al (OH) 3 + 3HCl \u003d Al 3 Cl + 3H 2 O;

g. ) AlCl 3 + 3AGNO 3 \u003d AgCl + Al (NO 3) 3;

A3 The degree of oxidation of nitrogen in nitric acid is equal

a) +5; b) 0; in 3; d) -4;

A4 sulfur and oxygen in the structure of the atom differ

a) the charge of the kernel;

b) the number of filled energy levels;

c) the number of electrons in the external energy level;

d) not the completeness of the external energy level.

A5 Mass share of nitrogen in sodium nitrate is equal

a) 33% b) 16.5% c) 8.2% g) 49%

A6 calcium sulfate formula

a) SASO. 4 ; b) Cas; c) Caso. 3 ; d) Cas. 2 O. 3 ;.

A7 nitric acid does not interact

a) with carbon oxide (IV); b) with copper oxide (II);

c) with potassium carbonate; d) with iron hydroxide;

A8 Oxygen shows a positive degree of oxidation in connection

a) SO 2 b) cuo c) of 2 g) h 2 o

A9 hydrogen sulfide does not interact

a) with oxygen; b) with hydrogen; c) with copper chloride) with lead nitrate;

A10 Nitrogen oxide (IV) interacts

a) with water in the presence of oxygen; b) with oxygen;

c) with hydrogen; d) with sulfuric acid;

IN 1. In the conversion chain s \u003d\u003e SO 2 \u003d\u003e So. 3 \u003d\u003e A \u003d\u003e VASO 4 .

Substance A ___________.

AT 2. Set compliance:

Source substances

Reaction products

1) NH. 4 No. 3 →

BUT) ZNSO. 4 + H. 2

2) KNO 3 →

B) hno 3 + ZnSO. 4

3) CU (NO 3) 2 + KOH →

IN ) Cu (OH) 2 ↓ + KNO 3

4) Zn (NO 3 ) 2 + H. 2 SO. 4 →

D) N 2 + O 2 + H 2 O

E) KNO 2 + O 2

C1. Using the electronic balance method in the reaction equation

Al + H. FROMl \u003d\u003e Al FROMl. 3 + H. 2

Arrange the coefficients and specify the oxidizer and reducing agent.

C2. When forming 1 mole sulfur oxide (IV) from simple substances 332.8 kJ stands out. How much heat is highlighted during combustion 1 g of sulfur

Option 1

A1. Substance that dissociates in aqueous solution to ions :

A2.Chemical reaction equation

H2SO4 + 2NAOH → Na2SO4 + 2H2O

corresponds to the abbreviated ion equation:

a) H + + OH - \u003d H2O

b) naoh \u003d na + + oh-

c) H2SO4 \u003d H + + SO42-

d) hso4- \u003d h + + SO42-

A3.The degree of oxidation of sulfur in sulfuric acid;

A4.Sulfur and oxygen in the structure of the atom are similar:

a) the charge of the kernel;

d) Not complete external energy level.

A5.The mass fraction of sulfur in sulfuric acid is:

A6.. Magnesium nitrite formula:

d)Mn (NO3) 2.

A7. Diluted sulfuric acid does not interact ::

c) hydrochloric acid;

A10. Sulfur oxide (IV) is able to react with:

d) SO3.

IN 1. In the conversion chain H2S \u003d\u003e S \u003d\u003e A \u003d\u003e SO3 \u003d\u003e Na2SO4.

Substance A ___________.

AT 2. At the interaction of 100 g sodium sulfite with a solution of hydrochloric acid, sulfur gas is formed at (n. Y) volume __________ l.

B.3 ? \u003d CO2 + H2O is skipped by the ion formula, the name and formula of which ___________.

AT 4. When zinc interacts with concentrated sulfuric acid, it turns out ______________________________.

AT 5 Set compliance:

Source substances	Reaction products
	A) n2 + o2 + h2o
	B) hno3 + znso4
3) Cu (NO3) 2 + KOH →
4) Zn (NO3) 2 + H2SO4 →
	E) Cu (OH) + KNO3

C1.. What volume of sulfur oxide (VI) was obtained from a sulfur oxide (IV) with a volume of 20 l containing 20% \u200b\u200bimpurities?

C2.

H2SO4 (CON) + C \u003d\u003e SO2 + CO2 + H2O

Arrange the coefficients and specify the oxidizer and reducing agent.

Chemistry test work for the first half of the year

Option 2.

A1.The substance that in the aqueous solution does not dissociate on the ions - this is:

A2.Abbreviated ion equation

AL + 3 + 3OH - \u003d AL (OH) 3 ↓

corresponds to the chemical reaction equation

a) Al2O3 + 3H2SO4 \u003d Al2 (SO4) 3 + 3H2O;

b) Al (NO3) 3 + 3KOH \u003d Al (OH) 3 + 3KNO3O

c) Al (OH) 3 + 3HCl \u003d AlCl3 + 3H2O;

d) AlCl3 + 3AGnO3 \u003d AgCl + Al (NO3) 3;

A3.The degree of oxidation of nitrogen in nitric acid is equal to;

A4. Sulfur and oxygen in the structure of the atom differ:

a) the charge of the kernel;

b) the number of completed energy levels;

c) the number of electrons in the external energy level;

d) not the completeness of the external energy level.

A5.Mass fraction of nitrogen in sodium nitrate is equal

A6. Calcium sulfite formula:

A7.Nitric acid does not interact:

a) with carbon oxide (IV);

b) with copper oxide (II);

c) with potassium carbonate;

d) with iron hydroxide;

A8.Oxygen shows a positive degree of oxidation in conjunction:

A9.Hydrogen sulfide does not interact:

a) with oxygen;

b) with hydrogen;

c) with copper chloride;

d) with lead nitrate;

A10.Nitrogen oxide (IV) interacts;

a) with water in the presence of oxygen;

b) with oxygen;

c) with hydrogen;

d) with sulfuric acid;

IN 1. In the conversion chain s \u003d\u003e SO2 \u003d\u003e SO3 \u003d\u003e A \u003d\u003e VASO4.

Substance A ___________.

AT 2. When the interaction of 50 g of calcium sulfite with a solution of sulfuric acid is formed sulfur gas at (n. Y) volume __________ l.

B.3 . In the abbreviated ionic equation 2H + + ? \u003d SO2 + H2O is skipped by the ion formula, the name and formula of which ___________.

AT 4. When the interaction of copper hydroxide (II) with sulfuric acid will succeed ______________________________.

AT 5.Set compliance:

Source substances	Reaction products
1) MG - H2SO4 →
2) MGO + H2SO4 →	B) MgSO4 + H2O + CO2
3) Cu (OH) 2 + H2SO4 →
4) MGCO3 + H2SO4 →	D) Cuo + H2O + SO2

C2.. What air volume will be required to obtain sulfur oxide (VI) with a volume of 10 liters of sulfur oxide (IV).

C2. Using the electronic balance method in the reaction equation

SO2 + I2 + H2O \u003d\u003e H2SO4 + HI

Arrange the coefficients by the method of electronic balance and specify the oxidizer and reducing agent.