A membrane that is permeable to Na+ but not Cl or water separates two compartments (see figure). Side A is filled with 1000 mOsM NaCl and side B is fillec with 10 mOsM NaCl. Electrodes from a voltmeter are placed in each compartment and side A is set as ground (0 mV).
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- 2) If 25g of NaCl is dissolved into a final volume of 500mL, what is the percent (w/v) concentration of NaCl in the solution? COMPUTE 3) How will you prepare 200mL of 0.3M NaCl prepared? COMPUTE and Include a short instruction in the preparation. 4) From a stock solution of 1M Tris solution, how will you prepare 400mL of 0.2M? COMPUTE and Do not forget to include a short instruction in the preparation. 5) How is 4mL of 50mM NaCl solution be prepared from a 2M NaCl stock? COMPUTE and Do not forget to include a short instruction in the preparation. 6) What is the molar concentration of a 10% NaCl solution? (At 25⁰C, the density of 10% NaCl is 1.09 g/ml ) COMPUTECalculate the Gibbs free energy of the reaction from mixing 50 mL each of 0.50 M AgNO3(aq) solution and 1 M of NaCl(aq) to form AgCl(s) at 25°. The Ksp of AgCl is 6.0 × 10—11 at 25 °C.Calculate the Gibbs free energy of the reaction from mixing 50 mL each of 0.50 M Ag+(aq) solution and 1 M of NaCl(aq) to form AgCl(s) at 25°. The Ksp of AgCl is 6.0 × 10—11 at 25 °C.
- Estimate the aqueous gram-solubility in g/L of mercury(I) chloride: Hg2Cl2(s) ↔ 2Hg+ (aq) + 2Cl– (aq), Ksp = 1.43×10–18 The molar mass of Hg2Cl2 is 472.06 g/mol.30mL 0.9% v/v green food coloring. Transfer 2mL of of food coloring to flask, QS the flask to 100mL with DI water. What is the concentration of the standard?Zinc(s) (MW=65.38), with a mass of 0.825 g, was reacted with 25.00 mL of NaClO (MW=74.44) according to the following unbalanced ionic equation. Determine the normality of NaClO.Zn(s) + ClO- → Zn(OH)2 + Cl- (in basic medium)
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- The hardness of water (hardness count) is usually expressed in parts per million (by mass) of CaCO3. What is the molar concentration of Ca2+ ions in a water sample with a hardness count of 175mg CaCO3il? How many milliliters of concentrated sulfuric acid, 94.0% (w/w), specific gravity of 1.831 are required to prepare 1 liter of a 0.100 M solution? The solubility-product constant for Ce(IO3)3 is 3.2x1010. What is the Ce3+ concentration in a solution prepared by mixing 50.0 ml of 0.0250 M Ce3.. with 50.00 ml of water?The reaction A(g) + B(g) ↔ C(g) + D(g) has ΔGrxn° = -28.62 kJ mol-1 and Kp = 0.63 at 980 °C. A rigid cylinder at that temperature contains 1.2 atm of A, 0.20 atm of B, 0.30 atm of C, and 0.27 atm of D. What is the reaction Gibbs energy?It is required to know the concentration of an aqueous solution of H2SO4 that appeared in the laboratoryChemistry III and it's unlabeled. To this end, a student of analytical chemistry carried out the followingProcedure: He took 5.00 mL of a fresh and standardized solution of 0.525M NaOH and brought them to a250.0 mL balloon to be completed with distilled water. Subsequently, he poured 15.00 mL of the solutionH2SO4 of unknown concentration in an Erlenmeyer flask and added 2 drops of phenolphthalein.Using a burette filled with the last NaOH solution, he noticed that when adding 39.40 mL of the hydroxidethe Erlenmeyer solution reached a faint but permanent pink. With the above dataDetermine the concentration and pH of the H2SO4 solution.