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- Ksp for Co(OH)2 is 5.92x10^-15a The salt NaNO3 can be thought of as NaCl+KNO3KCl. Demonstrate that 0 values show this type of additivity by calculating 0 for NaNO3 from 0 values of NaCl,KNO3andKCl found Table 8.4. Compare your calculated value with the 0 value for NaNO3 in the table. b Predict approximate 0 values for NH4NO3 and CaBr2 using the values given in Table 8.4.One litre of a saturated aqueous solution of Ag2SO4 (MW = 311.79 g mol- 1) at 25 °C is evaporated to dryness. 4.844 g of Ag2SO4 residue was produced. What is the solubility product (Ksp)?
- at 25oC, Ka for aspirin (C9H8O4) is 3.0 x 10-4. Calculate Δ Go (kJ/mol) for the reaction: C9H8O4(aq) + H2O(l) = H3O+(aq) + C9H7O4-(aq)Estimate the pH of an aqueous solution of benzoic acid, C6H5COOH, of concentration 0.0957 mol dm–3. The pKa of benzoic acid is 4.19. Assuming ideal. pH = ______ 3 sig. fig.In the standardi zation of HCl using pure anhydrou s sodium carbonate as primarystandard for methy l orange as indica tor , 1.0 mL HCl was found to be equiva lent to 0.05gof sodium carbonate (MW =106). The no rmality of HCl is
- An experiment was conducted to determine the effect of glucose on the freezing point of water. Experimental data showed thatthe freezing point depression of water in solution was –2.6°C when 1.0 g of glucose was dissolved in 10g of solvent. Calculatethe expected freezing point for such solution and compare the expected freezing point to the value found experimentally. Give aplausible explanation for any discrepancies. (M.W. of glucose= 180.16g/mol; i=1). Show all your work.What is Kb for the equilibrium rreacton: CN- + H2O <=> HCN + OH- ? Ka value of 6.23 x10-10Hexanoic acid was added to an immiscible biphasic solvent system, water and CCl4 at 20.0OC and the equilibrium concentrations of hexanoic acid were determined to be 3.66 g/L in H2O and 67.0 g/L in CCl4. Caluclate the distrubution coeffiecent (D2) of hexanoic acid in water with respect to CCl4.
- Which of the following is a spontaneous reaction.? a. Rxn with ΔH =- 10Kj/mol ΔS= -5J/mol T= 300K b. NaCl +H20 -> NaOH + HCl 25C c. H20(l) -> H2O(s) Temp: 25C d. Dissolution of 100g of solid sugar in 100 mL ice tea. Consider following reaction: HgO (s) -> Hg(l) + ½ O2 (g) Delta H = +90.7 kj/mol. What quantity of heat in kj/mol is required to produce one mole HgO? Write your answer without units. Given the following data 2ClF(g) + O2(g) --> Cl2O(g) + F2O (g) Delta H= 167.4 kJ I 2ClF3(g) + 2O2(g) --> Cl2O(g) + 3F2 O (g) Delta H= 341.4 kJ II 2 F2(g) + O2(g) ---> 2F2O (g) Delta H= -43.4 kJ III Calculate the delta H in kJ for below reaction: ClF(g) + F2(g) ---> ClF3(g)Please Answer my question from the picture im send... And note With same dengan.. God bless you .. Answer question from CO(SCN) until AgNO3... Thanks from fe2+ until Zn(NH3) me have solutionIn the synthesis of hydrocarbons, the carbon source is carbon dioxide. Although the CO2 concentra?on in the atmosphere raises at a drama?c speed, point sources are probably the easier sources for a PtX process. Iden?fy 3 possible point sources, explain why CO2 is formed and what challenges each of the three CO2 streams presents