A concentrated solution of HCl has a molarity of 7.75 M. You add 25.00 mL to...
A concentrated solution of HCl has a molarity of 7.75 M. You add 25.00 mL to a flask and then dilute with water. The mass of the final solution is 125.0 g. What is the mass percent of HCl ?
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A concentrated solution of HCl has a molarity of 7.75 M. You add
25.00 mL to...
25.00 g of potassium hydrogen phosphate (K HPO4) is dissolved in enough water to make 125.0...
25.00 g of potassium hydrogen phosphate (K HPO4) is dissolved in enough water to make 125.0 mL of a solution with a density of 1.22 g/mL. What is the concentration of the solution in % (m/m). % (m/v). molarity, mosM and mEq/L of the potassium ion? Note: K2HPO4 has a molar mass of 174.2g/mole. What would be the final molarity of the above solution if you were to dilute it by adding 175 mL of water?
3. A student pipetted 25.00 mL of a 0.2531 M solution of HCl into an Erlenmeyer...
3. A student pipetted 25.00 mL of a 0.2531 M solution of HCl into an Erlenmeyer flask. After adding 3 drops of phenolphthalein indicator to the flask, the student started adding NaOH from the burette, until the color in the Erlenmeyer flask turned light pink, The student calculated that 21.40 mL NaOH was transferred in the flask to neutralize the acid. a) Calculate the number of moles of HCl initially present (Reaction: NaOH(aq) + HCl(aq) -NaCl(aq) + H2O() b) Calculate...
Concentrated hydrochloric acid (HCl) (molecular mass 36.5 g/mol) has a molarity of 3.6M. What volume of...
Concentrated hydrochloric acid (HCl) (molecular mass 36.5 g/mol) has a molarity of 3.6M. What volume of concentrated HCl would you need to add to prepare a 20% (w/v) solution of HCl with a final volume of 500 mL, I have calcualted that 3.6mol/L x 36.5g/mol =131.40g/L. Then to get the 100ml value and percentage: 131.40/1000 x 100 =13.14g/100ml therefore 13.14%. 20% of this would be 2.628g. Is this the answer?
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A...
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 67 mL of the concentrated HCl, adding it to water, and diluting to 0.800 L. Calculate the approximate molarity of this solution from the volume, percent composition, and density.
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measu...
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 36 mL of the concentrated HCI, adding it to water, and diluting to 0.500 L. Calculate the approximate molarity of this solution from the volume, percent composition, and density. Answer:
TReferencer A solution is prepared by adding 49.9 ml concentrated hydrochloric acid and 19.7 ml concentrated...
TReferencer A solution is prepared by adding 49.9 ml concentrated hydrochloric acid and 19.7 ml concentrated nitric acid to 300 ml water More water is added until the final volume is 1.00 L. Calculate H".COH)and the pH for this solution. (Hint: Concentrated HCl is 38% HCI (by mass) and has a density of 1.19 g ml., concentrated HNO, is 70% HNO, (by mass) and has a density of 1.42 g/mL.] OH")= M pH-
1- How many milliliters of an aqueous solution of 0.122 M aluminum chloride is needed to...
1- How many milliliters of an aqueous solution of 0.122 M aluminum chloride is needed to obtain 13.9 grams of the salt? 2- In the laboratory you dissolve 15.7 g of barium sulfide in a volumetric flask and add water to a total volume of 250 . mL. What is the molarity of the solution? 3- In the laboratory you dilute 4.43 mL of a concentrated 6.00 M hydroiodic acid solution to a total volume of 50.0 mL. What is...
3. What is the molarity of an HCl solution when a 25.00 ml aliquot of 0.50M...
3. What is the molarity of an HCl solution when a 25.00 ml aliquot of 0.50M HCl is diluted to a volume of 500.0ml?
2. Calculate the molarity of a solution made from 15.00 mL of 32.0 wt. % HCl...
2. Calculate the molarity of a solution made from 15.00 mL of 32.0 wt. % HCl stock (density of 1.161 g/mL) diluted to 100 mL in a volumetric flask. Calculate the spike volume of that 100 mL dilute solution needed to make 1.000 L of 1.25 x 10 ppm HCl solution.
A titration of 25.00 mL of O.1550 M HCl solution with a solution of NaOH of...
A titration of 25.00 mL of O.1550 M HCl solution with a solution of NaOH of unknown molarity starts at a buret reading for NaOH of 0.33 mL The phenolphthalein indicator turns light pink the acid solution for over 30 seconds at a buret reading of 24.19 mL 2) What was the volume of HCl you started with? 3) How many moles of HCl were in the original solution? 4) Write the balanced chemical equation for the titration reaction. 5)...
3. A student pipetted 25.00 mL of a 0.2531 M solution of HCl into an Erlenmeyer flask. After adding 3 drops of phenolphthalein indicator to the flask, the student started adding NaOH from the burette, until the color in the Erlenmeyer flask turned light pink, The student calculated that 21.40 mL NaOH was transferred in the flask to neutralize the acid. a) Calculate the number of moles of HCl initially present (Reaction: NaOH(aq) + HCl(aq) -NaCl(aq) + H2O() b) Calculate...
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 67 mL of the concentrated HCl, adding it to water, and diluting to 0.800 L. Calculate the approximate molarity of this solution from the volume, percent composition, and density.
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 36 mL of the concentrated HCI, adding it to water, and diluting to 0.500 L. Calculate the approximate molarity of this solution from the volume, percent composition, and density. Answer:
TReferencer A solution is prepared by adding 49.9 ml concentrated hydrochloric acid and 19.7 ml concentrated nitric acid to 300 ml water More water is added until the final volume is 1.00 L. Calculate H".COH)and the pH for this solution. (Hint: Concentrated HCl is 38% HCI (by mass) and has a density of 1.19 g ml., concentrated HNO, is 70% HNO, (by mass) and has a density of 1.42 g/mL.] OH")= M pH-
3. What is the molarity of an HCl solution when a 25.00 ml aliquot of 0.50M HCl is diluted to a volume of 500.0ml?
2. Calculate the molarity of a solution made from 15.00 mL of 32.0 wt. % HCl stock (density of 1.161 g/mL) diluted to 100 mL in a volumetric flask. Calculate the spike volume of that 100 mL dilute solution needed to make 1.000 L of 1.25 x 10 ppm HCl solution.
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