1. You weighed out 2.297 g of NaOH and used a 250.0 mL volumetric flask. How...
1. You weighed out 2.297 g of NaOH and used a 250.0 mL volumetric flask. How many significant figures are in the molarity of the NaOH solution you made?
2. What is the molarity of the NaOH titrant solution when you weigh out 2.297 g of NaOH and used a 250.0 mL volumetric flask?
3. The burette initial titrant volume reading is 0.60 mL and the final titrant volume reading is 40.20 mL. What is the net volume of titrant dispensed?
4. What are moles of NaOH dispensed in 39.60 mL of 0.2297 M solution used?
Homework Answers
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1. You weighed out 2.297 g of NaOH and used a 250.0 mL
volumetric flask. How...
Materials: NaOH MW = 40 g/mL, KHP - potassium hydrogen phthalate, KHC8H404, MW = 204.23 g/mol....
Materials: NaOH MW = 40 g/mL, KHP - potassium hydrogen phthalate, KHC8H404, MW = 204.23 g/mol. Acetic acid, HC2H302, MW = 60.05 g/mol Part 1: Standardization of NaOH Assume 0.951 g of KHP is weighed and transferred to a 250 mL Erlenmeyer flask. Approximately 50 ml water is added to dissolve the KHP. Note that the exact volume of water is not important because you only need to know the exact number of moles of KHP that will react with...
Materials: NaOH MW = 40 g/mL, KHP - potassium hydrogen phthalate, KHC8H404, MW = 204.23 g/mol....
Materials: NaOH MW = 40 g/mL, KHP - potassium hydrogen phthalate, KHC8H404, MW = 204.23 g/mol. Acetic acid, HC2H302, MW = 60.05 g/mol Part 1: Standardization of NaOH Assume 0.951 g of KHP is weighed and transferred to a 250 mL Erlenmeyer flask. Approximately 50 ml water is added to dissolve the KHP. Note that the exact volume of water is not important because you only need to know the exact number of moles of KHP that will react with...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask,...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask, adds enough water to dissolve the solid and then adds water to the 300 mL mark on the neck of the flask. Calculate the concentration (in molarity units) of aluminum bromide in the resulting solution? Calculate the mass, in grams of sodium iodide that must be added to a 250 mL volumetric flask in order to prepare 250 mL of a 0.138 M aqueous...
You are provided with a 250 mL volumetric flask, deionized water, and solid NaOH. How much...
You are provided with a 250 mL volumetric flask, deionized water, and solid NaOH. How much NaOH should be weighed out in order to make 250. mL of 0.100 M solution?
informations to solve the problem supooosed 3.109 g of sodium hydroxide was weighed out,dissolved, quantitively transferred...
informations to solve the problem supooosed 3.109 g of sodium hydroxide was weighed out,dissolved, quantitively transferred to a 250 ml volumetric flask, made up to the mark,and mixed well, what is the molarity of sodium hydroxide? the answer is 0.3109 M 1.a. Burets are used to transfer titrant in a titration. A burette is depicted in the lab manual. A 10.00 mL sample of vinegar was titrated with the sodium hydroxide sample from question 1. The initial volume of sodium...
1. Calculate the Molarity, NaOH(mol/L) for Standar 1, Standar 2 and Standard 3 with calculations 2....
1.
Calculate the Molarity, NaOH(mol/L) for Standar 1, Standar 2 and
Standard 3 with calculations
2.
Write and balance the chemical reaction between NaOh and
H2SO4
Molarity of standard H2SO4 solution (from the lab container) - 0.2411 M Write and balance the chemical reaction between NaOH and H2S04 (don't forget physical states): Standard 1 Standard 2 Standard 3 NaOH used (mL) (final – initial burette readings] 27.26m H2SO4 (mL) dispensed 15. Om 29.3lmu 16.0mL 31.14 ml 17.0ML Molarity, NaOH (mol/L)...
Calculate the concentration of HCl in the 250.0 mL volumetric flask and calculate the excess number...
Calculate the concentration of HCl in the 250.0 mL volumetric flask and calculate the excess number of moles and total number of moles of HCl added to the alkali metal carbonate. From the total number of moles of HCl added and knowing the excess number of moles, calculate the moles of HCl that reacted with M2CO3. Use the following data for the calculations: mass of m2co3 transferred = 0.3877 g volume of 1mol HCl added to alkali metal = 20...
A 25.00-mL volume of commercial hydrogen peroxide solution was diluted to 250.0 mL in a volumetric...
A 25.00-mL volume of commercial hydrogen peroxide solution was diluted to 250.0 mL in a volumetric flask. Then 25.00 mL of the diluted solution were mixed with 200. mL of water and 20. mL of 3 M H2SO4 and titrated with 0.02177 M KMnO4. The first pink color was observed with 27.72 mL of titrant. A blank prepared from water in place of H2O2 required 0.07 mL to give visible pink color. Using the H2O2 reaction in the Analytical Applications...
0.3926 g of salicylic acid is dissolved in water and made up to 250.0 mL in a volumetric flask. Then, 4.00 mL of th...
0.3926 g of salicylic acid is dissolved in water and made up to 250.0 mL in a volumetric flask. Then, 4.00 mL of this solution is pipetted into a 50.0 mL volumetric flask and diluted with water to the mark. What is the final salicylic acid concentration?
0.3856 g of salicylic acid is dissolved in water and made up to 250.0 mL in a volumetric flask. Then, 3.00 mL of th...
0.3856 g of salicylic acid is dissolved in water and made up to 250.0 mL in a volumetric flask. Then, 3.00 mL of this solution is pipetted into a 50.0 mL volumetric flask and diluted with water to the mark. What is the final salicylic acid concentration?
Materials: NaOH MW = 40 g/mL, KHP - potassium hydrogen phthalate, KHC8H404, MW = 204.23 g/mol. Acetic acid, HC2H302, MW = 60.05 g/mol Part 1: Standardization of NaOH Assume 0.951 g of KHP is weighed and transferred to a 250 mL Erlenmeyer flask. Approximately 50 ml water is added to dissolve the KHP. Note that the exact volume of water is not important because you only need to know the exact number of moles of KHP that will react with...
Materials: NaOH MW = 40 g/mL, KHP - potassium hydrogen phthalate, KHC8H404, MW = 204.23 g/mol. Acetic acid, HC2H302, MW = 60.05 g/mol Part 1: Standardization of NaOH Assume 0.951 g of KHP is weighed and transferred to a 250 mL Erlenmeyer flask. Approximately 50 ml water is added to dissolve the KHP. Note that the exact volume of water is not important because you only need to know the exact number of moles of KHP that will react with...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask, adds enough water to dissolve the solid and then adds water to the 300 mL mark on the neck of the flask. Calculate the concentration (in molarity units) of aluminum bromide in the resulting solution? Calculate the mass, in grams of sodium iodide that must be added to a 250 mL volumetric flask in order to prepare 250 mL of a 0.138 M aqueous...
1.
Calculate the Molarity, NaOH(mol/L) for Standar 1, Standar 2 and
Standard 3 with calculations
2.
Write and balance the chemical reaction between NaOh and
H2SO4
Molarity of standard H2SO4 solution (from the lab container) - 0.2411 M Write and balance the chemical reaction between NaOH and H2S04 (don't forget physical states): Standard 1 Standard 2 Standard 3 NaOH used (mL) (final – initial burette readings] 27.26m H2SO4 (mL) dispensed 15. Om 29.3lmu 16.0mL 31.14 ml 17.0ML Molarity, NaOH (mol/L)...
0.3926 g of salicylic acid is dissolved in water and made up to 250.0 mL in a volumetric flask. Then, 4.00 mL of this solution is pipetted into a 50.0 mL volumetric flask and diluted with water to the mark. What is the final salicylic acid concentration?
0.3856 g of salicylic acid is dissolved in water and made up to 250.0 mL in a volumetric flask. Then, 3.00 mL of this solution is pipetted into a 50.0 mL volumetric flask and diluted with water to the mark. What is the final salicylic acid concentration?
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