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- Five drops of dichlorofluorescein have been added to a solution containing 0.800 g sample which required 25.30 mL of 0.100 M AgNO3. (c) Calculate the weight percent NaCl in the original sample.(Q46) Given that the molar solubility of copper (1) chloride (99.00 g/mol) at 25°C is 4.15 x 10-4 mol/L, it follows that at equilibrium: O 41.1 mg of CuCl will exist in one liter of solution as a precipitate 41.1 mg of CuCl will be dissolved in one liter of solution O 41.1 mg of precipitate and 41.1 mg of dissolved ions will be present in one liter of solution O Increasing the temperature would have no effect on solubiility O Diluting the solution would cause precipitation to begin(n) (0)" (p) (0) (s) (t)# (u) ol M00, НО. "gre OH "NH₂ OH H₂N OH oⒸ/NaⒸ HCI/H₂O (excess)/A Aspirin (acetylsalicylic acid) 1₂ li Acetylcholine chloride ? A 225 °C (sublime) -[H₂0] [H₂Cro] CrO₂/H,0 H₂O/acetone H₂O H₂O warm then, dil H₂0¹ work-up H₂SO, (cat.) H₂0/A Hạo, Acetylcholinesterase 3
- If CuCl2 has a Ksp of 1.9 x 10-7 and a solution of CuCl2 has a chloride ion concentration of 6.0 x 10-3...is the solution saturated, unsaturated or supersaturatedcalkulate Hhemolar Solubiliky of pbl (kse s.o X167) in Awater theThe Ksp of calcium phosphate [Ca3(PO4)2]at 25°C is 2.07 x 10-33. What is its molar solubility at this temperature? The balanced chemical equation for the dissociation reaction is: Ca³PO4(s) --> 3 Ca²+ (aq) + 2 PO4³- (aq). 3- 2.91 x 10-7 M 6.75 x 10-⁹ M 4.55 x 10-17 M 1.14 x 10-7 M 2.03 x 10-7 M
- Hexanoic acid was added to an immiscible biphasic solvent sysem, 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 (D1) of hexanoic acid in CCl4 with respect to water.Q1:- what is the solubility (s) for Ag3PO4, if you know that Ksp for Ag3PO4 = 1.4 x 10-8 ? Q2:- what is the Ksp for Ca3(PO4)2, if you know the solubility(s) for this compound equal 1.3 x 10-6 ?Define the term Equivalence point?
- The KSp of PbBr2 is 4.6 x 10-6. WWhat would be the solubility of this compound in a solution that was already 0.074M in KBr? mhen doneOral rehydration salts are stated to contain the following components: Sodium Chloride 3.5g Potassium Chloride 1.5g Sodium Citrate 2.9g Anhydrous Glucose 20.0g 8.342 g of oral rehydration salts are dissolved in 500 ml of water. 5 ml of the solution is diluted to 100 ml and then 5 ml is taken from the diluted sample and is diluted to 100 ml. The sodium content of the sample is then determined by flame photometry. The sodium salts used to prepare the mixture were: Trisodium citrate hydrate (C6H5Na3O7, 2H2O) MW 294.1 and sodium chloride (NaCl) NW 58.5. Atomic weight of Na = 23. The content of Na in the diluted sample was determined to be 0.3210 mg/100 ml. Determine the % of stated content of Na in the sample. The stated should be 104.5, how??To analyze an aspirin sample, 0.3470 g of crushed tablets are weighed and treated with 50.00 mL 0.1155 M sodium hydroxide, boiling for 10 minutes. Under these conditions the acid acetylsalicylic (MW, 180) reacts according to: CH3COO-C6H4-COOH + 2 OH- → OH-C6H4-COO- + CH3COO- The excess NaOH is then titrated with 11.5 mL of 0.2100 M HCl. What is the purity of said show ?.