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- 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)?Please don't provide handwritten solution...Electroly Concentr X Chapter Partial P henrys la x My Q 'index.html Sodium hydroxide is a white, crystalline basic salt that readily dissociates in water to produce a strong base NaOH(s) – - Na* (aq) + OH (aq) According to the CRC Handbook of Chemistry and Physics, sodium hydroxide (NaOH; m.m. = 39.997 g mol-1; d = 2.13 g cm 3) has an aqueous solubility of 100.0g/100g at 20 °C. Below is a table of aqueous sodium hydroxide densities (in kg L-1) at varying concentrations (wt%) and temperatures (from handymath). Conc. (wt%) 0 °C 10 °C 20 °C 40 °C 60 °C 80 °C 100 °C 1.0124 1.0107 • 1.0095 1.0033 0.9941 0.9824 0.9693 2 1.0244 1.0220 1.0207 1.0139 1.0045 0.9929 0.9797 4. 1.0482 1.0444 1.0428 1.0352 1.0254 1.0139 1.0009 8 1.0943 1.0889 1.0869 1.0780 1.0676 1.0560 1.0432 12 1.1399 1.1333 1.1309 1.1210 1.1101 1.0983 1.0855 16 1.1849 1.1776 1.1751 1.1645 1.1531 1.1408 1.1277 20 1.2296 1.2218 1.2191 1.2079 1.1960 1.1833 1.1700 24 1.2741 1.2658 1.2629 1.2512 1.2388 1.2259 1.2124 28 1.3182 1.3094…
- Q 1. At 291 K, the equivalent conductivities at infinite dilution of HCl „NaCl and CH3COONA are 369.3, 101.7 and 1.7 S cm2eq-1 respectively. If equivalent conductivity of centinormal solution of acetic acid is 14.3 S cm2eq-1, [H+]in solution of acetic acid is Xx104. Calculate of Value of X?Q2 At 291 K, the equivalent conductivities at infinite dilution of HCI, NaCl and CH3COONA are 369.3, 101.7 and 71.7 S cm2 eq-1 respectively. If equivalent conductivity of centinormal solution of acetic acid is 14.3 S cm2 eq-1, Calculate of the degree of dissociation (in %) of CH3COOH ?Q1. Dissolved 0.273 grams of pure sodium oxalate (Na.C,O.) in distilled water and added sulfuric acid and titration the solution at 70 ° C by using 42.68 ml of KMNO, solution and has exceeded end point limits by using 1.46 ml of standard oxalic acid (H; C.O.) with 0.1024 N. Calculate the normlity of KMNO. Note that the molecular weight of sodium oxalate (Na,C,O.) = 134 and its equivalent weight = 67
- (a) What is the molarity of the NaOH? (b) Based on the propagation-of-error formula, what is the standard devlation of the molarity?Six iron tablets containing FESO4-7H,0 were dissolved in 100-ml of 0.1 M HNO; with gentle heating. All of the Fe- is converted to Fe by the strong oxidizıng conditions. After the solution had cooled to room temperature 2.5-ml of 35wt% NH4OH was added. The precipitate Fe;O3-xH,O that was filtered weighed 0.345 g. Thermogravimetric analysis of the crude product showed a 10.5% weight loss below 150 C How much iron was in each of the tablets? Report the average mg-Fe per tablet?A chemist received different mixtures for analysis with the statement that they contained NaOH, NaHCO3, Na2CO3, or compatible mixtures of these substances, together with inert material. From the data given, identify the respective materials, and calculate the percentage of each component. 1.000g samples and 0.2500N HCl were used in all cases. (A) For Sample W: With PP, 24.32ml was used. A duplicate sample required 48.64ml with MO. (B). For Sample X: The addition of PP caused no color change. With MO, 38.47ml of the acid was required. (C). For Sample Y: To cause a color change in the cold with PP, 15.29ml of the acid was necessary, and an additional 33.19ml was required for complete neutralization. (D) For Sample Z: The sample was titrated with acid until the pink of PP disappeared; this process required 39.96ml. On adding an excess of the acid, boiling, and titrating back with alkali, it was found that the alkali was exactly equivalent to the excess acid added.
- 1. The electrode potential for the electrode Cl" | Cl«@) | Pt is given by E'ceu/V = 1.484 867 + (3.958 492 x 10*)(T/K) – (2.750 639 x 10“)(T/K)² In the range 273-373 K. Calculate E°cell, the standard reaction Gibbs energy, enthalpy and entropy at 25°C.A 10.0 g sample of KC3H504 (A)(MW = 204.23 g A) was titrated with 50.00 mL of KOH (B) to endpoint. What is the molarity of the KOH solution? Use A and B to show compounds in the working. Given: KCgHsO4 (s) + КОН (аq) ----> K2C8H4O4 (aq) + H2O (1I) 1. 10.0 g Ax 3. 5. 7. 9 2._ 4. X 6. 8. 1.--- 2.__--- 3._---- 4._- 5. A 6.Consider a soil with negligible ionic strength (activity = concentration), constant pH of 7.7, (Ca2+) = 10*3.2 M and total P = 104.4 M Given the dissolution reaction of brushite is written: CaHPO4-2H2O(s) + H* (aq) 2 Ca2 "(aq) + H2PO4¯ (aq) + 2H2O .and that H3PO4 has a pka2 of 7.21, calculate log(IAP) (same as log(Q)) of the reaction, and save your answer for the next question. Your Answer: