Calculate the ionic strength of a solution that is 0.040 mol kg−1 in K3[Fe(CN)6](aq), 0.030 mol kg−1 in KCl(aq), and 0.050 mol kg−1 in NaBr(aq).
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Calculate the ionic strength of a solution that is 0.040 mol kg−1 in K3[Fe(CN)6](aq), 0.030 mol kg−1 in KCl(aq), and 0.050 mol kg−1 in NaBr(aq).
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- a)For the reaction given in Part A, how much heat is absorbed when 3.10 molmol of AA reacts? Express your answer numerically in kilojoules. b)For the reaction in Part A, ΔrS∘=25.0 J K−1 mol−1ΔrS∘=25.0 J K−1 mol−1. What is the standard Gibbs energy of reaction at 281 KK , ΔrG∘ (281K)ΔrG∘ (281K)? Express your answer numerically in kJ mol−1kJ mol−1.The equilibrium pressure of H2 over a mixture of solid uranium and solid uranium hydride at 500 K is 1.04 Torr. Calculate the standard Gibbs energy of formation of UH3 (s) at 500 K.The molar conductivity of 0.010 M CH3COOH(aq) is 1.65 mS m2 mol-1. What is the acidity constant, Ka, of the acid?
- Calculate the ionic strength of a 0.200 molal solution of Cr(NO3)3The equilibrium constant for the reaction CO(g) + H2O(g) ⇌ CO2(g) + H2(g) is K = 1.03 × 105 at 298.15 K. Calculate the standard reaction Gibbs energy at this temperature.The mobility of an ethanoate (acetate) ion in aqueous solution at 25 °C is 4.24 × 10−8 m2 s−1 V−1. Calculate the molar ionic conductivity.
- Define Chemical potential μ= μi+ + μi-, in terms of ion activity coefficients-Express the mean activity coefficient of the ions of the solution of CaCl2 in terms of the activity coefficients of the individual ions.Calculate the masses of (i) Ca(NO3)2 and, separately, (ii) NaCl to add to a 0.150 mol kg−1 solution of KNO3(aq) containing 500 g of solvent to raise its ionic strength to 0.250.The dissociation vapour pressure (the pressure of gaseous products in equilibrium with the solid reactant) of NH4CI at 427 °C is 608 kPa but at 459 °C it has risen to 1115 kPa. Calculate (a) the equilibrium constant. (b) the standard reaction Gibbs energy, (c) the standard enthalpy, (d) the standardentropy of dissociation, all at 427 °C. Assume that the vapour behaves as a perfect gas and that ΔHΘ and ΔSΘ are independent of temperature in the range given.
- Calculate the masses of (a) Ca(NO3)2 and, separately, (b) NaCI to add to a 0.150 mol kg-1 solution of KNO3(aq) containing 500 g of solvent to raise its ionic strength to 0.250.What would be the KPs value of Al(OH)3, considering that its solubility is 2,5 x 10^-8 mol/L?Calculate the solubility of calcite in water in contact with a soil atmosphere containing CO2 at the partial pressure of 0.1 bar, and find the pH of the saturated solution