For students all specialities

INDIVIDUAL WORK-8

For students all specialities

MODUL 2

	In the maximal possible exited state the total spin of an atom makes 3. Find the number of the group, in which located this atom:
a	2
b
c
d
f

	In a highest oxide of an element a ratio between atoms of oxygen and the element makes 1:1. How many valent р -orbitals are filled with electrons in the atom of this element:
a
b
c
d

	Among the given series of atoms and ions of elements have an identical electronic configuration:
a	Na – Si – К^+
b	О^2– – Тi – Al^3+
c	Zn^2+ – Р – Cu^+
d	Сl^– – Sc^3+ – Аr
	How many nonpaired electrons are in atom of magnesium in its normal and exited state:
a	1 and 1
b	1 and 2
c	0 and 1
d	0 and 0
f	0 and 2

	On a basis of what laws has been made a sequence of elements: carbon, nitrogen, oxygen, fluorine:
a	The elements are located in ascending order of atomic mass
b	Elements of one group
c	All belong to metals
d	All belong to nonmetals
f	Elements of one period

	Among the given ions a similar to ion Na^+ electronic shell is:
a	Ca2+
b	Mg2+
c	H^+
d	K^+
f	Li^+

	The s- і p-bonds differ with:
a	Location of area of higher electronic density
b	Energy of bond
c	Displacement of an electronic pair to one of atoms
d	Polarity of bond
f	By number of electrons, which form bond
	Find the charge of a complex ion, charge and coordination number of the central atom in chloropentammineplatinum (IV) carbonate, and also sum of coefficients in the reaction of this salt solution with hydrochloric acid:
a	3+, 4+, 6, 15
b	3+, 4+, 6, 12
c	4+, 2+, 6, 15
d	2+, 6+, 6, 15
f	2+, 4+, 4, 10

	Find molar mass of an equivalent of the central atom and molar mass of an equivalent for К2[Pt(NО2)2Cl2]:
a	97,5 g/mol; 109 g/mol
b	48,75 g/mol; 218 g/mol
c	48,75 g/mol; 109 g/mol
d	97,5 g/mol; 218 g/mol
f	97,5 g/mol; 436 g/mol

	Value for the reaction 2C2H6(g)+ 7O2 = 4CO2(g)+ 6Н2O(g), if react= –2855,68 kJ/mol; react= 92,77 J/mol×К, is equal to:
a	–1883,32 kJ/mol
b	–2283,32 kJ/mol
c	–2483,32 kJ/mol
d	2683,32 kJ/mol
f	–2883,32 kJ/mol

	Two reactions run at temperature 20°C with identical rate. How will be changed the rates of this reaction correspond at 70°C, if temperature coefficient of rate of one of them is 2,0, and of the second — 3,0
a	1: 9,4
b	1: 3,3
c	1: 6,2
d	1: 7,6
f	1: 5,1

	Find the equilibrium constant for reaction РСl5(g)= РСІ3(g)+ Cl2(g), if at some temperature from 2 moles of phosphorus pentachloride, that was placed in a 10 litre vessel, is dicomposed 1,5 moles:
a	0,1
b	0,25
c	1,0
d	0,75
f	0,45

Дата добавления: 2015-11-05