Chemistry

00000001 578. NaCrO2 + Na2SO3 + H2SO4 Cr2(SO4)3 +

Equalize the reaction using the half-reaction method NaCrO2 + Na2SO3 + H2SO4 = Cr2(SO4)3 + Na2SO4 +H2O
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00000002 How to get ferrite by acting with alkali on

608. How to get ferrite by acting with alkali on Fe(OH)3
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00000004 Chlorides, bromides and iodides of the scandiu

498. Chlorides, bromides and iodides of the scandium subgroup are easily hydrolyzed, forming polymeric oxohalides EOHal. Write the equations for the hydrolysis...
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00000005 Ru + 3KNO3 + 2KOH = K2RuO4 +3KNO2 + H2O

Ru + 3KNO3 + 2KOH = K2RuO4 +3KNO2 + H2O equalize
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00000006 Boiling diagram Kudryashov HNO3 CH3COOH

Heterogeneous equilibrium in binary systems containing liquid and vapor phases. Multivariant problem No. 1 from the problem book "Collection of examples...
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00000007 melting diagram Kudryashov KCl PbCl2

00000007 Heterogeneous equilibrium in binary systems containing liquid and solid phases. Multivariant problem No. 1 from the problem book "Collection of...
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00000008 For a chemical reaction taking place in a gas

Tasks 3.7.1 - 3.7.20 For a chemical reaction occurring in the gas phase, the value of the equilibrium constant K ([p] = 1 atm) is known at the reaction...
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00000009 For a gas reaction whose equation is given

Tasks 3.5.1 - 3.5.20 For a gas reaction, the equation of which is given in Table. 3.5, find the equilibrium constant at 298 K and pressure p, if the value of...
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00000010 Task 3.2. For the indicated reaction, a consta

Zadacha 3.2. Dlya ukazannoy reaktsii dana konstanta skorosti omyleniya - k. Vychislit´ vremya, neobkhodimoye dlya omyleniya efira, vzyatogo v...
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00000011 Task 3.3. For the reaction below, the concentr

Task 3.3. For the reaction below, the concentrations (c1, c2) are plotted against time at two temperatures (T1, T2). Knowing the initial concentration of the...
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00000012 From the molality m and the average ionic acti

Task 4 p. 311 (from Kudryashov) 18 var. From the molality m and the average ionic activity coefficient of the electrolyte A, calculate the average ionic...
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00000013 For a concentration element composed of metal

For a concentration element composed of metal A in electrolyte solutions B with concentrations m1 and m2 mol / 1000 g, calculate the EMF at 298 K. Calculate...
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00000014 For a reaction that occurs reversibly in a gal

3. For a reversible reaction in a galvanic cell, an equation is given for the dependence of EMF on temperature. For a given temperature T, calculate the emf E...
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00000015 Spontaneous and non-spontaneous processes. The

3. Spontaneous and non-spontaneous processes. The second law of thermodynamics. Entropy.
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00000017 How does the pressure of saturated vapor over

26. How does the pressure of saturated vapor over a solution of a non-volatile substance depend on the composition of the solution?
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00000018 Types of electrical conductors. Mechanisms of

37. Types of conductors of electricity. Mechanisms of their electrical conductivity. Strong and weak electrolytes.
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00000019 Colloidal solutions (lyophobic sols), colloida

62. Colloidal solutions (lyophobic sols), colloidal state of a substance, its features.
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00000020 Polyelectrolytes. Isoelectric point of a prote

83. Polyelectrolytes. Isoelectric point of a protein. Influence of medium pH on the stability of protein solutions. Methods for determining the isoelectric...
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00000021 For the chemical reaction in Table 3, calculat

Task 2. For the chemical reaction indicated in Table 3, calculate the thermal effect (Н0), the change in entropy (S0), the change in Gibbs energy (G0) and...
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00000022 Task 5. Table 6 shows the kinetic parameters o

Task 5. Table 6 shows the kinetic parameters of the reactions: Ea is the activation energy, A is the pre-exponential factor in the Arrhenius equation, and n is...
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