If 7.81 mL NaOH was used in the titration of a 0.357 g sample use ratios...
If 7.81 mL NaOH was used in the titration of a 0.357 g sample use ratios to determine mass of sample needed to use 22.00 mL of NaOH in the next trial.
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If 7.81 mL NaOH was used in the titration of a 0.357 g sample
use ratios...
QUESTION 7 2 points Save Answer After the first trial, in order to maximize the titration...
QUESTION 7 2 points Save Answer After the first trial, in order to maximize the titration precision, the sample size of pure KHC8H404 or unknown for a trial should be adjusted so 20-23 mL of NaOH are delivered in both part B and C. This can be done as noted in your lab manual. 115,81 ml NaOH was used in the titration of a 0.397 sample use ratios to determine mass of sample needed to use 22.00 mL of NaOH...
4. Imagine you perform a complete a titration between an impure KHP sample and NaOH. The...
4. Imagine you perform a complete a titration between an impure KHP sample and NaOH. The unknown mixture of KHP is weighed and dissolved in approximately 75 ml of distilled water. Three trials are completed, and the following data is collected. Trial 1 Trial 2 Trial 3 Mass of KHP 1.2941 1.2765 1.2985 sample (g) Total volume of 35.28 33.58 36.10 NaOH used (mL) | [NaOH] M) | 0.0972 0.0972 0.0972 a. Calculate the moles of KHP in the sample...
I’m so confused on how to do any of this. Name Date General Chemistry I Lab CHE 1211 Data: Concentration of NaOH Trial Titration (to be used as practice) Initial burete eading4.0 ml Final burette...
I’m so confused on how to do any of this.
Name Date General Chemistry I Lab CHE 1211 Data: Concentration of NaOH Trial Titration (to be used as practice) Initial burete eading4.0 ml Final burette reading 20.h m 22.om. Volume of NaOH used Repeat until 2 successful titrations are achieved. Titrations (to be used in calculations) K.Oml 0.bml 35.o mL 22.3 mL 38.5ml ↓ 30.6 mL45.0 mL 49.0 mL 35.5mL50.0 me 22.0mL H. m0 ml 1b.20 m 4.5ml Initial burette...
Suppose 1.00 g of NaOH is used to prepare 250 mL of an NaOH solution. Compare...
Suppose 1.00 g of NaOH is used to prepare 250 mL of an NaOH solution. Compare the expected molarity of this solution to the actual average molarity you measured in the standardization. What do you notice? Do you think the results would have been more accurate if a different type of acid or base were used in the standardization? Why, or why not? There are many different primary standards that could be used in a standardization titration. What are the...
A volume of 20.05 mL of NaOH was used to titrate a 0.45 g sample of...
A volume of 20.05 mL of NaOH was used to titrate a 0.45 g sample of potassium hydrogen phthalate (KHP), a monoprotic acid, which has a molecular weight of 204.2 g/mol. Calculate the molarity of the NaOH solution. For the above titration of potassium hydrogen phthalate with NaOH, if you have the following pH indicators: methyl red, bromothymol blue, and phenolphthalein, which indicator should you use? Explain why.
Consider the titration of a 73.9 mL sample of 0.13 M HC2H3O2 with 6.978 M NaOH....
Consider the titration of a 73.9 mL sample of 0.13 M HC2H3O2 with 6.978 M NaOH. Ka(HC2H3O2) = 1.8x10-5 Determine the initial pH before any NaOH is added. Express your answer using two decimal places. Consider the titration of a 46.6 mL sample of 0.078 M HC2H3O2 with 1.135 M NaOH. Ka(HC2H3O2) = 1.8x10-5 Determine the volume of added base required to reach the equivalence point. Answer in units of milliliters. Consider the titration of a 17.2 mL sample of...
A titration of vinegar with a solution of NaOH was performed. If 3.35 mL of vinegar...
A titration of vinegar with a solution of NaOH was performed. If 3.35 mL of vinegar needs 45.0 mL of 0.135 M NaOH to reach the equivalence point in a titration CH3COOH(aq)+NaOH(aq)→H2O(l)+NaC2H3O2(aq) Part A: Calculate the mass of acetic acid present in the vinegar sample? Part B: How many grams of acetic acid are in each mL of vinegar? Part C:How many grams of acetic acid would be in a 1.60 qt sample of this vinegar? Part D: How many...
3. A 0.7026 g sample of an unknown acid requires 40.96 mL of 0.1158 M NaOH...
3. A 0.7026 g sample of an unknown acid requires 40.96 mL of 0.1158 M NaOH for neutralization to a phenolphthalein end point. There are 1.22 mL of 0.1036 M HCl used for back-titration. a. How many moles of OH are used? How many moles of Ht from HCI? moles OH moles H+ b. How many moles of Ht are there in the solid acid? (Use Eq. 5.) moles H+ in solid c. What is the molar mass of the...
The titration of an impure sample of KHP found that 36.00 mL of 0.100 M NaOH...
The titration of an impure sample of KHP found that 36.00 mL of 0.100 M NaOH was required to react completely with 0.758 g of sample. What is the percentage of KHP in this sample?
A 17.0 mL sample of a 0.357 M aqueous acetic acid solution is titrated with a...
A 17.0 mL sample of a 0.357 M aqueous acetic acid solution is titrated with a 0.348 M aqueous potassium hydroxide solution. What is the pll at the start of the titration, before any potassium hydroxide has been added? pH-
QUESTION 7 2 points Save Answer After the first trial, in order to maximize the titration precision, the sample size of pure KHC8H404 or unknown for a trial should be adjusted so 20-23 mL of NaOH are delivered in both part B and C. This can be done as noted in your lab manual. 115,81 ml NaOH was used in the titration of a 0.397 sample use ratios to determine mass of sample needed to use 22.00 mL of NaOH...
4. Imagine you perform a complete a titration between an impure KHP sample and NaOH. The unknown mixture of KHP is weighed and dissolved in approximately 75 ml of distilled water. Three trials are completed, and the following data is collected. Trial 1 Trial 2 Trial 3 Mass of KHP 1.2941 1.2765 1.2985 sample (g) Total volume of 35.28 33.58 36.10 NaOH used (mL) | [NaOH] M) | 0.0972 0.0972 0.0972 a. Calculate the moles of KHP in the sample...
I’m so confused on how to do any of this.
Name Date General Chemistry I Lab CHE 1211 Data: Concentration of NaOH Trial Titration (to be used as practice) Initial burete eading4.0 ml Final burette reading 20.h m 22.om. Volume of NaOH used Repeat until 2 successful titrations are achieved. Titrations (to be used in calculations) K.Oml 0.bml 35.o mL 22.3 mL 38.5ml ↓ 30.6 mL45.0 mL 49.0 mL 35.5mL50.0 me 22.0mL H. m0 ml 1b.20 m 4.5ml Initial burette...
3. A 0.7026 g sample of an unknown acid requires 40.96 mL of 0.1158 M NaOH for neutralization to a phenolphthalein end point. There are 1.22 mL of 0.1036 M HCl used for back-titration. a. How many moles of OH are used? How many moles of Ht from HCI? moles OH moles H+ b. How many moles of Ht are there in the solid acid? (Use Eq. 5.) moles H+ in solid c. What is the molar mass of the...
A 17.0 mL sample of a 0.357 M aqueous acetic acid solution is titrated with a 0.348 M aqueous potassium hydroxide solution. What is the pll at the start of the titration, before any potassium hydroxide has been added? pH-
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