Phenolphthalein is used in titrating KHP with NaOH. Why? Is phenolphthalein required for a potentiometric titration...
Phenolphthalein is used in titrating KHP with NaOH. Why?
Is phenolphthalein required for a potentiometric titration of a weak acid with NaOH? Why or why not?
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Phenolphthalein is used in titrating KHP with NaOH. Why?
Is phenolphthalein required for a potentiometric titration...
8. Prepare a titration curve for the titration of KHP with NaOH using the EXCEL spreadsheet...
8. Prepare a titration curve for the titration of KHP with NaOH using the EXCEL spreadsheet template. Assume concentrations of 0.1 M for KHP and NaOH in preparing the titration curve. Attach a copy of the titration curve and explain why phenolphthalein can be used as the indicator for the titration. (3 pts) NOTE: see phthalic acid for the K, value for KHP.
Define an acid-base indicator. Explain why phenolphthalein is chosen as an indicator for the titration for...
Define an acid-base indicator. Explain why phenolphthalein is chosen as an indicator for the titration for standardizing NaOH, determining % composition of KHP, and determining the acid content of vinegar. (Look up for the Ka for the indicator online and explain why this indicator is chosen for these titrations)
can someone help me with these lab questioins on titration of diluted vinegar When titrating an...
can someone help me with these lab questioins on titration of
diluted vinegar
When titrating an acid with a base, phenolphthalein is often used to indicate the end of the titration. When placed in an acidic solution, phenolphthalein turns the solution a. b. green colourless pink. a milky white. C. d. To make a standard NaOH solution, about 13 mL of 3 M NaOH is mixed with about 300 mL of deionized water (H2OD) in a 500 ml beaker. Why...
Consider the structures of KHP and phenolphthalein and explain why each has a single acidic hydrogen...
Consider the structures of KHP and phenolphthalein and explain why each has a single acidic hydrogen (one that dissociates as a weak acid) when there are several hydrogen atoms in the structure (HINT: Review the rules for predicting acid strength).
KHP, potassium hydrogen phthalate (KHCHO is often used to standardie basic solution used in titration. If...
KHP, potassium hydrogen phthalate (KHCHO is often used to standardie basic solution used in titration. If a 0.855. sample or KHP requires 31.44 ml of a KOR solution to fully realize it, what is the (KOH) in the solution? The reaction is KHC.H.O. KOHK C HO H O . 2. The KOH solution standardized above is used to titrate a 20.00-ml sample of sulfuric acid (H,SO.) solution of unknown concentration. Determine (H.SO.) for the unknown acid solution if 41.27 mL...
Molarity for NaOH = 0.0873 2. In a second titration with the same solution of NaOH as used in Question #1, the student...
Molarity for NaOH = 0.08732. In a second titration with the same solution of NaOH as used in Question #1, the student weighs out a sample of KHP of 0.359 g. Calculate the volume of the NaOH solution needed to neutralize this sample of KHP. 3. A monoprotic weak acid with the general formula of HA will react with a base, such as NaOH. Write the neutralization equation which describes the reaction. 4. If K, for the weak acid, HA is 1.8...
Name Section/CRN EXPERIMENT 9 POTENTIOMETRIC DETERMINATION OF AN EQUILIBRIUM CONSTANT PRE-LABORATORY QUESTIONS . The following preparatory...
Name Section/CRN EXPERIMENT 9 POTENTIOMETRIC DETERMINATION OF AN EQUILIBRIUM CONSTANT PRE-LABORATORY QUESTIONS . The following preparatory questions should be answered before coming to b. are intended to introduce you to several ideas that are important to aspects of the experiment. You must turn in your work to your instructor before you allowed to begin the experiment. Potassium acid phthalate, KHP (KHC.H.O.), is a primary standard reagent used to determine exactly the concentration of a solution of base, such as NaOH,...
Name Section/CRN EXPERIMENT 9 POTENTIOMETRIC DETERMINATION OF AN EQUILIBRIUM CONSTANT PRE-LABORATORY QUESTIONS The following preparatory questions...
Name Section/CRN EXPERIMENT 9 POTENTIOMETRIC DETERMINATION OF AN EQUILIBRIUM CONSTANT PRE-LABORATORY QUESTIONS The following preparatory questions should be answered before coming to lab. They are intended to introduce you to several jdeas that are important to aspects of the experiment. You must turn in your work to your instructor before you will be allowed to begin the experiment. Potassium acid phthalate, KHP (KHC4H&O4), is a primary standard reagent used to determine exactly the concentration of a solution of base, such...
Titration of unknown acid. a. 0.25 grams of KHP was used to standardize 95.01ml of an...
Titration of unknown acid. a. 0.25 grams of KHP was used to standardize 95.01ml of an unknown concentration of NaOH. Determine the Molarity of the NaOH. Use correct significant figures. From the above chart predict the pKa of the unknown acid.
4. Knowing that one mole of KHP, C3H5O4K, reacts with one mole of NaOH, what mass of KHP is required to neutralize 30.0...
4. Knowing that one mole of KHP, C3H5O4K, reacts with one mole of NaOH, what mass of KHP is required to neutralize 30.0 mL of the 0.10 M NaOH solution? 5. If 24.5 mL of the 0.10 M NaOH solution is required to reach the endpoint in a titration with an unknown monoprotic acid, how many moles of the acid were present?
8. Prepare a titration curve for the titration of KHP with NaOH using the EXCEL spreadsheet template. Assume concentrations of 0.1 M for KHP and NaOH in preparing the titration curve. Attach a copy of the titration curve and explain why phenolphthalein can be used as the indicator for the titration. (3 pts) NOTE: see phthalic acid for the K, value for KHP.
can someone help me with these lab questioins on titration of
diluted vinegar
When titrating an acid with a base, phenolphthalein is often used to indicate the end of the titration. When placed in an acidic solution, phenolphthalein turns the solution a. b. green colourless pink. a milky white. C. d. To make a standard NaOH solution, about 13 mL of 3 M NaOH is mixed with about 300 mL of deionized water (H2OD) in a 500 ml beaker. Why...
KHP, potassium hydrogen phthalate (KHCHO is often used to standardie basic solution used in titration. If a 0.855. sample or KHP requires 31.44 ml of a KOR solution to fully realize it, what is the (KOH) in the solution? The reaction is KHC.H.O. KOHK C HO H O . 2. The KOH solution standardized above is used to titrate a 20.00-ml sample of sulfuric acid (H,SO.) solution of unknown concentration. Determine (H.SO.) for the unknown acid solution if 41.27 mL...
Molarity for NaOH = 0.08732. In a second titration with the same solution of NaOH as used in Question #1, the student weighs out a sample of KHP of 0.359 g. Calculate the volume of the NaOH solution needed to neutralize this sample of KHP. 3. A monoprotic weak acid with the general formula of HA will react with a base, such as NaOH. Write the neutralization equation which describes the reaction. 4. If K, for the weak acid, HA is 1.8...
Name Section/CRN EXPERIMENT 9 POTENTIOMETRIC DETERMINATION OF AN EQUILIBRIUM CONSTANT PRE-LABORATORY QUESTIONS . The following preparatory questions should be answered before coming to b. are intended to introduce you to several ideas that are important to aspects of the experiment. You must turn in your work to your instructor before you allowed to begin the experiment. Potassium acid phthalate, KHP (KHC.H.O.), is a primary standard reagent used to determine exactly the concentration of a solution of base, such as NaOH,...
Name Section/CRN EXPERIMENT 9 POTENTIOMETRIC DETERMINATION OF AN EQUILIBRIUM CONSTANT PRE-LABORATORY QUESTIONS The following preparatory questions should be answered before coming to lab. They are intended to introduce you to several jdeas that are important to aspects of the experiment. You must turn in your work to your instructor before you will be allowed to begin the experiment. Potassium acid phthalate, KHP (KHC4H&O4), is a primary standard reagent used to determine exactly the concentration of a solution of base, such...
Titration of unknown acid. a. 0.25 grams of KHP was used to standardize 95.01ml of an unknown concentration of NaOH. Determine the Molarity of the NaOH. Use correct significant figures. From the above chart predict the pKa of the unknown acid.
4. Knowing that one mole of KHP, C3H5O4K, reacts with one mole of NaOH, what mass of KHP is required to neutralize 30.0 mL of the 0.10 M NaOH solution? 5. If 24.5 mL of the 0.10 M NaOH solution is required to reach the endpoint in a titration with an unknown monoprotic acid, how many moles of the acid were present?
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