Fundamentals of General Chemistry. Terms and Problems in Tests. Part 2. Final examination tests

The Ministry of Science and Higher Education of the Russian Federation

Kazan National Research Technological University

T. Petrova, E. Starodubets

FUNDAMENTALS 

OF GENERAL CHEMISTRY

TERMS AND PROBLEMS IN TESTS

Part 2

Final examination tests

Study guide

Kazan

KNRTU Press

2020

UDC 54(075)
ВВC Г1я7

Published by the decision of the Editorial Review Board 
of the Kazan National Research Technological University

Reviewers:

Prof. A. Ulahovich

Assoc. Prof. S. Podyachev

Petrova T.
Fundamentals of General Chemistry. Terms and Problems in Tests : In 2 parts. 
Part 2. Final examination tests : Study guide / T. Petrova, E. Starodubets; 
The Ministry of Education and Science of the Russian Federation, Kazan National 
Research Technological University. – Kazan : KNRTU Press, 2020. – 80 p. 

ISBN 978-5-7882-2838-9
ISBN 978-5-7882-2840-2 (p. 1)

The Part 2 of the study guide contains variants of individual test tasks for 

monitoring the results of students learning upon completion of the discipline “General 
and Inorganic Chemistry”.

The study guide is intended for the Russian speaking first-year students learning 

in the educational program in the area 18.03.01 "Chemical Technology", who study 
the discipline “General and Inorganic Chemistry” in English, also to attract students 
from foreign countries to study in the framework of international educational 
programs.

The study guide was prepared at the Department of Inorganic Chemistry.

ISBN 978-5-7882-2840-2 (р. 2)
© Petrova Т., Starodubets Е., 2020

ISBN 978-5-7882-2838-9
© Kazan National Research Technological 

University, 2020

UDC 54(075)
ВВC Г1я7

Contents

Variant 1………………………………………………………………..

Variant 2………………………………………………………………..

Variant 3………………………………………………………………..

Variant 4………………………………………………………………..

Variant 5………………………………………………………………..

Variant 6………………………………………………………………..

Variant 7………………………………………………………………..

Variant 8………………………………………………………………..

Variant 9………………………………………………………………..

Variant 10………………………………………………………………

Variant 11………………………………………………………………

Variant 12………………………………………………………………

Variant 13………………………………………………………………

Variant 14………………………………………………………………

Variant 15………………………………………………………………

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72

Variant 1

1. The number of protons and neutrons in the nucleus of the isotope Mg
12
26

is:
А) 12 and 26;
B) 12 and 14;
C) 14 and 12;  
D) 26 and 26.

2. The ground state electronic configuration 
1s22s22p63s23p63d104s24p64d105s25p2 has an atom of:
А) Sn;
B) Ca;
C) Ge;
D) Ti. 

3. The element with atomic number 37:
А) refers to the s-block elements;
B) refers to the р-block elements;
C) has the highest oxidation state +1;
D) has a basic oxide in the highest oxidation state.

4. The MO diagram (two nuclei of atoms lie on the z axis)

corresponds to:
А) O2;
В) N2;
С) B2;
D) C2.

5. Find a relationship between the chemical formula of a molecule and its 
shape:
1. BBr3
2. NCl3
3. BrCl3

А) trigonal planar;
B) bent;
C) trigonal pyramidal;
D) tetrahedral;
Е) T-shaped;
F) trigonal bipyramidal.

МО      

(2px) (2py)

*(2px)
*(2py)

(2pz)

*(2pz)

E

(2s)

*(2s)

Вариант 1

1. Число протонов и нейтронов в ядре изотопа Mg:
12
26

А) 12 и 26;
Б) 12 и 14;
В) 14 и 12;  
Г) 26 и 26.

2. Электронную конфигурацию 1s22s22p63s23p63d104s24p64d105s25p2 в 
основном состоянии имеет атом: 
А) Sn;
Б) Ca;
В) Ge;
Г) Ti. 

3. Элемент с атомным номером 37: 
А) относится к s-элементам;
Б) относится к p-элементам;
В) имеет высшую степень окисления +1;
Г) образует основный оксид в высшей степени окисления.

4. Энергетическая диаграмма МО (за ось связывания двух ядер 
принята ось z)

соответствует частице:
А) O2;
Б) N2;
В) B2;
Г) C2.

5. Установите соответствие между формулой и геометрией молекулы:
1. BBr3
2. NCl3
3. BrCl3

А) треугольная;
Б) угловая;
В) тригонально-пирамидальная;
Г) тетраэдрическая;
Д) Т-образная;
Е) тригональная бипирамида.

МО      

(2px) (2py)

*(2px)
*(2py)

(2pz)

*(2pz)

E

(2s)

*(2s)

6. 100 mL of water was added to 25 mL of a solution that has a density of 
1.78 g/mL and contains 85.16% H2SO4 by mass. The solution density after 
dilution is ρ1 = 1.19 g/mL. Molar concentration (mol/L) of sulfuric acid in 
the resulting solution is:
А) 3.3;
B) 3.9;
C) 1.0;
D) 0.0032.

7. For the reaction

SO2(g) + 1/2O2(g) = SO3(g),   ∆rHo(298 K) < 0,   ∆rSo(298 K) < 0

the following statement is true:
А) the reaction is endothermic;
В) the reaction is exothermic;
C) the entropy factor determines the possibility of the reaction in 
the forward direction.

8. The standard enthalpy change (kJ) for the reaction

4NH3(g ) + 5O2(g) = 4NO(g) + 6H2O(g),

using data in Table 2, is:
А) 905;
B) −105;
C) −905;
D) 1627;
E) −1627.

9. With increasing pressure chemical equilibrium shifts to the reactants (to 
the left) in the reaction:
А) CO(g) + Cl2(g)  COCl2(g);
B) CO2(g) + 2N2(g)  C(s) + 2N2O(g);
C) CH4(g) + 4S(s)  CS2(g) + 2H2S(g);
D) 2Fe(s) + 3H2O(g)  Fe2O3(s) + 3H2(g).

10. Concentration of Н+ (H3O+) ions in aqueous solution is 10−5 mol/L. 
The pH of this solution is:
А) 3;
B) 5;
C) 9;
D) 14.

11. The reaction rate decreases by a factor of 16 when the temperature 
decreases from 80 to 60 °C. The temperature coefficient of the reaction rate 
is:
А) 3;
B) 8;
C) 4;
D) 2.

12. The solution is acidic, when the salt dissolved in water is:
А) CaCl2;
B) KNO3;
C) K2S;
D) Cu(NO3)2.

6. К 25 мл 85.16 %-ного раствора H2SO4 (ρ = 1.78 г/мл) прибавили 
100 мл воды. Плотность раствора стала ρ1 = 1.19 г/мл. Молярная 
концентрация (моль/л) серной кислоты в полученном растворе:
А) 3.3;
Б) 3.9;
В) 1.0;
Г) 0.0032.

7. Для реакции

SO2(г) + 1/2O2(г) = SO3(г),   ∆Hреакц 

o
< 0,   ∆Sреакц 

o
< 0 

справедливо следующее утверждение:
А) реакция эндотермическая;
Б) реакция экзотермическая;
В) энтропийный фактор определяет возможность протекания реакции 
в прямом направлении.

8. Стандартное изменение энтальпии (кДж) реакции

4NH3(г) + 5O2(г) = 4NO(г) + 6H2O(г)

с использованием данных табл. 2 составляет:
А) 905;
Б) −105;
В) −905;
Г) 1627;
Д) −1627.

9. При повышении давления химическое равновесие смещается 
к исходным веществам в реакции:
А) CO(г) + Cl2(г)  COCl2(г);
Б) CO2(г) + 2N2(г)  C(к) + 2N2O(г);
В) CH4(г) + 4S(к)  CS2(г) + 2H2S(г);
Г) 2Fe(к) + 3H2O(г)  Fe2O3(к) + 3H2(г).

10. Концентрация ионов Н+ (H3O+) в растворе равна 10−5 моль/л. 
Значение рН раствора:
А) 3;
Б) 5;
В) 9;
Г) 14.

11. При понижении температуры от 80 до 60 °C скорость реакции 
уменьшилась в 16 раз. Температурный коэффициент скорости реакции 
равен:
А) 3;
Б) 8;
В) 4;
Г) 2.

12. Среда водного раствора становится кислой при растворении соли:
А) CaCl2;
Б) KNO3;
В) K2S;
Г) Cu(NO3)2. 

13. The degree of the sodium sulfide hydrolysis decreases when: 
A) sodium hydroxide is added to the solution;
B) diluting the solution;
C) sodium sulfide is added to the solution;
D) lowering the temperature of the solution.

14. The sum of the coefficients in the equation of the redox reaction

NaNO2 + KI + H2SO4 → NO + …

is:
А) 9
B) 11;
C) 13;
D) 15.

15. If an acidified aqueous solution of KMnO4 acts as the oxidizing agent:

MnO4– + 8H+ + 5e– = Mn2+ + 4H2O,       Еo = +1.507 V,

then according to the standard reduction potentials of the half-reactions:

(1) Fe3+ + e– = Fe2+,
Еo = +0.771 V

(2) Co3+ + e– = Co2+,
Еo = +1.808 V

(3) Pb4+ + 2e– = Pb2+,
Еo = +1.694 V

the reducing agent can be:
А) (1);
Б) (2);
В) (3).

Variant 2

1. The allowed values of the quantum numbers n and l that describe a 1s
atomic orbital are: 
А) n = 2, l = 0;
B) n = 1, l = 0;

C) n =1, l = 2;
D) n = 0, l = 0.

2. The ground state electronic configuration 1s22s22p63s23p63d104s1 has an 
atom of:
А) Sn;
B) K;
C) Ge;
D) Cu. 

3. The element with atomic number 14:
А) refers to the d-block elements;
B) refers to the р-block elements;
C) is semi-metal;
D) has highest positive oxidation state +4.