If 35.0 ml of an aqueous H2SO4 solution requires 19.7 ml of a 0.71 M NaOH to reach the endpoint, what is the molarity of the H2SO4 solution? H2SO4(aq) + NaOH(aq) → Na2SO4(aq) + H2O(l)
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If 35.0 ml of an aqueous H2SO4 solution requires 19.7 ml of a 0.71 M NaOH to reach the endpoint, what is the molarity of the H2SO4 solution? H2SO4(aq) + NaOH(aq) → Na2SO4(aq) + H2O(l)
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- Dimethyl sulfoxide, C2H6SO, is a compound which is used in some countries to carry drugs through the skin into the bloodstream without the use of a syringe. Dimethyl sulfoxide is a water-soluble liquid with a density of 1.101 g/mL at 25 oC. Calculate the molarity of a solution of dimethyl sulfoxide made by dissolving 90.0 mL of dimethyl sulfoxide at 25 oC in enough water to make 700 mL of solution.Calculate the amount of solute needed to prepare the following solutions. 180 mL of a 42.1 %% (m/vm/v) LiNO3 solution Express your answer using two significant figures. 470 mL of a 2.3 % (m/v) KOH solution Express your answer using two significant figures. 255 mLmL of a 12 %% (v/v) isopropyl alcohol solution Express your answer using two significant figures.Solution X 100mL of 0.10M NaOH (aq) is mixed with 100mL of 0.10M HBr(aq) Solution Y 100mL of 0.1M NaBr(aq) is mixed with 100mL of 0.10M HBr(aq) Solution Z 100mL of 0.1 M HC2H3O2 (aq) is mixed with 100mL of 0.10M NaC2H3O2(aq) A student prepares three solutions, X, Y, and Z, as described in the table above. The values of Ka for the acidic species in the solutions are given in the table below. Species Ka HBr >>1(very large) HC2H3O2 1.8x10^-5 a. Using the information above, write the letters of the solutions to rank the solutions in order of increasing pH. Explain your reasoning for the ranking. Lowest pH Highest pH < < b.Does the pH of solution Y increase, decrease, or remain the same when 100 mL of water is added? Justify your answer. c.The student adds 0.0010 mol of NaOH(s) to solution Y, and adds 0.0010 mol of NaOH(s) to solution Z. Assume that the volume of each solution does not change when the NaOH(s) is added. The pH of…
- 10.0 mL of a 0.150 M solution of phosphoric acid, H3PO4, are diluted to a total volume of 1.00 L. How many grams of phosphoric acid are in 50.0 mL of this dilute solution?If 34.00 ml of 0.200M NaOH is needed to titrate a 10.00ml sulfuric acid solution (H2SO4) to the end point, what is the molarity of the (H2SO4) solution? (Round your answer to two decimal places)Ethylene glycol (C2H6O2), a nonelectrolyte, is used as antifreeze in car radiators. A solution containing 86.0 g of ethylene glycol dissolved in 465 g of water has a density of 1.35 g/mL at 25 °C. Calculate the following: A) the %m/m of the ethylene glycol in this solution. B) the molarity of the ethylene glycol in this solution.
- For the following reaction:2 HClO4 + Ca(OH)2 Ca(ClO4)2 + 2 H2O(1) What is the equivalent mass of Ca(OH)2? g/equiv(2) Calculate the number of equivalents in 35.6 grams of Ca(OH)2. equivHow many milliliters of water should be added to 250 ml of a solution of H2SO4 sulfuric acid with a concentration of 19.6 and a density of 1.96 g / ml in order to obtain a solution of 2M concentrationWhat volume of a 0.229 M sodium hydroxide solution is required to react with 16.4 mL of a 0.141 M hydriodic acid solution? Give your answer to three significant figures. The reaction is: HI + NaOHNaI + H2O mL NaOH
- 3. The following molarities were calculated from replicate standardizations of a NaOH solution: 0.502 8, 0.502 9, 0.502 3, 0.503 1, 0.502 6, 0.502 7, 0.503 4, and 0.502 5. Assuming no systematic errors, within what range are you 90% certain that the true mean value of the molarity falls?If an aqueous solution is 3.11% (w/v) in sodium hydroxide, NaOH how many grams of sodium hydroxide are there in a liter of solution? _____g2ml of 0.425M NaOH solution is required to neutralize 25.0ml of H2SO4. Determine the concentration of sulfuric acid solution? Calculate the normality of a HCI solution if 1 ml of solution reacts with 0.438g of Na2CO3_ 2HCI + Na2CO3 2NaCI + CO2 + H2O