DSo, 298 J/mol

O192,6 - 191,5 173,51 188,72 DSo, 298 J/mol

· Call the substances. Calculate the equivalent weights for the following substances: NO, H₃PO₄, Hg(NO₃)₂, Mn₂O₃, H₂CO₃, Ca(H₂PO₄)₂

· To determine the equilibrium temperature at which in system there comes an equilibrium state at 1500 K

· SiCl₄(g) + 2H₂O(g) = SiO₂(s) + 4HCl(g)

• -657,5 -241,82 -910,94 -92,31 DH^o_,298 kJ/mol

DSo, 298 J/mol

• Call the substances. Calculate the equivalent weights for the following substances: MgO, HClO₄, NaH₂PO₄, Al₂O₃, HNO₃, NH₄Cl

· Calculate Colligative Properties for the solution of Cd(NO₃)₂ under standard conditions (Mass fraction 5 (%), density 1,015 g/ml).

· Write the equations of the below given chain.

• N₂® NH₃ ® NO ® NO₂ ® HNO₂

· Calculate concentrations (mole fraction, molar, normal, molal and titration) and Colligative Properties for the following solutions of Al(NO₃)₃ under standard conditions (Mass fraction 5 (%), density 1,015 g/ml).

· Define an oxidizer and a reducer, work out the equation of electronic balance, place factors.

·

· To define a reaction orientation

• 4Fe(OH)_2(s) + O_2(g) + 2H₂O_(l)= 4Fe(OH)_3(s)
• ∆G⁰₂₉₈, kJ/mol -480 0 -239 -700

· Call the substances. Calculate the equivalent weights for the following substances: SO₂, K₂HPO₄, Ag₂SO₄, Mn₂O₃, H₂CO₃, Ca(H₂PO₄)₂

· Calculate concentrations (mole fraction, molar, normal, molal and titration) for the solution of CuSO₄ under standard conditions (Mass fraction 10%, density 1,019 g/ml).

· Call the substances. Calculate equivalent weight and equivalent volume of substance.: Al₂O₃, HNO₃, NH₄Cl, SnO₂, Fe(OH) ₂, CuSO₄

· How many milliliters of 30 % of HCl solution (ρ=1.15 g/ml) are necessary to prepare 3 L of its solution with CN=0.1 mol/L?

• Calculate Gibbs free energy:
• PbO(s) + H₂ (g) = PbO(s) + H₂O(l)
• ∆G⁰₂₉₈, kJ/mol -217,6 0 -188,2 -228,6

· How many milliliters of 50 % of sulfuric acid (ρ=1.4 g/ml) must be diluted in water to get 10 L of its solution (CN=0.25 mol/L)?

• Call the substances. Calculate the equivalent weights for the following substances: CuO, H₃PO₃, MgCO₃, PbO₂, Sn(OH)₂, Zn(OH)Cl

· What is the osmotic pressure of 5 % NaHCO3solution that is used for the injection during acidosis (ρ=1.035, α=0.98)?

• Formulate Le-Shatelye's rule and explain, how increase of pressure will be reflected in the following equilibrium systems:
• CO₂+C (f) «2CO;
• 3Fe (f) +H₂O (g) «Fe₃O₄ (f) +H₂ (g).
• 3. Define an oxidizer and a reducer, work out the equation of electronic balance, place factors.
• 

· Call the substances. Calculate the equivalent weights for the following substances: CO₂, HNO₂, Ca₃(PO₄)_2, SO₃, KHS, Pb(NO₃)₂

· Standard enthalpy formation of CO₂equals -393.6 kJ/mol, H₂O equals -285.9 kJ/mol, C₆H₁₂O₆is -1272.45 kJ/mol. Calculate the standard enthalpy change for the reaction

· C₆H₁₂O₆+ O₂®CO₂+ H₂O.

· Standard enthalpy formation of HCl equals -92.05 kJ/mol, HI equals -25.1 kJ/mol. Calculate the standard enthalpy change for the reaction

• 2HI + Cl₂®2HCl + I₂

· What is the osmotic pressure of 18 % of sucrose at 20⁰C if the solution density is 1,07 g/cm3?

· Call the substances. Calculate the equivalent weights for the following substances: K₂O, H₂SO₄, Al(OH)₂Cl, SiO₂, Mn(OH)₂, Al(OH)Br₂

· How many grams of Н3РО4 must be taken for preparation of 0.2 M solution in the volume of 5 L?

· Call the substances. Calculate the equivalent weights for the following substances: MgO BaO, H₂ZnO₂, FeS, CrO, NH₄OH, Fe(HSO₄)₂

· What is the osmotic pressure of 18 % of sucrose at 20⁰C if the solution density is 1,07 g/cm3?

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