This is a titration reaction. 1) why is it assumed that the reaction between NaOH and...
This is a titration reaction.
1) why is it assumed that the reaction between NaOH and KHP goes to completion? would it be a source of error in the experiment if it did not? why or why not?
2) In an acid-base reaction, a proton (H+) is transferred from one chemical species to another. The species that donates the proton is called an acid and the species that accepts the proton id called a base (brownsted lowery definition). KHP is an acid. Write the acid-base reaction between KHP and water showing the full chemical structure of KHP. In other words, show the proton transfer with arrows between KHP and water.
Homework Answers
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This is a titration reaction.
1) why is it assumed that the reaction between NaOH and...
Standardization of NaOH: Acid Base Titration Objective: In this lab, you will accurately determine the concentration...
Standardization of NaOH: Acid Base Titration Objective: In this lab, you will accurately determine the concentration of a solution of sodium hydroxide (NaOH) using a 0.500M potassium hydrogen phthalate (KHP) standard solution. Background: Acid–Base Titrations When an acid reacts with a base, a neutralization reaction occurs. The H+ ions from the acid and the HO– ions from the base combine to form water and are therefore neutralized. The other product of reaction is a salt. For example, hydrochloric acid reacts...
A solution of which compound will be in the buret during your experiment? NaOH HCl HOAc...
A solution of which compound will be in the buret during your experiment? NaOH HCl HOAc EtOAc EtOH You will use titration to determine the equilibrium concentration of one component of this chemical reaction. Which component will you be determining the concentration of? HOAc (acetic acid) H2O (water) EtOAc (ethyl acetate) EtOH (ethyl alcohol) HCl (hydrochloric acid) Recall how titration works. If 17.51mL of 0.0985M NaOH is need to achieve the endpoint of a titration with KHP (potassium hydrogen phthalate), how many...
Equivalence Point for Titration #1: 24.96 mL Equivalence Point for Titration #2: 25.40 mL Equivalence Point...
Equivalence Point for Titration #1: 24.96
mL
Equivalence Point for Titration #2: 25.40
mL
Equivalence Point for Titration #3: 25.20
mL
Midpoint pH for Titration #3: 9.80
QUESTIONS:
4) Set up the calculation required to determine
the concentration of the NaOH solution via titration of a given
amount of KHP. Include all numbers except the given mass of
KHP.
5) Set up the calculation required to determine
the concentration of the unknown strong acid via titration with a
known volume...
Part 3: Working with the Titration Curve for a Polyprotic Acid and Strong Base Consider carbonic...
Part 3: Working with the Titration Curve for a Polyprotic Acid and Strong Base Consider carbonic acid, H.CO, (which is polyprotic) - a) Write the multi-step dissociation equilibrium for this acid in water (ie, there should be three chemical dissociation stages connected by two equilibrium arrows, given below): b) Below is an idealized titration curve showing the exhibited pH for 25.00 mL of a 0.100 M aqueous carbonic acid solution as a function of added 0.100 M NaOH in units...
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...
Weak Acid-Strong Base Titration Date Nanse PRE-LAB OUESTIONS 1 Calculate the molarity of a NaOH solution...
Weak Acid-Strong Base Titration Date Nanse PRE-LAB OUESTIONS 1 Calculate the molarity of a NaOH solution that was used to titrate 1.2 g of potassium acid phthalate if 37.50 ml of the base were reauired to get to the end point of the titration. 2 It takes 12.45 ml. of a 0.500 M NaOH solution larity of the acid to titrate 30.0 mL of acetic acid. What is the mo- 3. Using the titration curve below, calculate the K, of...
Lysergic acid (LSD, shown below) is a carboxylic acid with hallucinogenic properties. Use curved arrows to...
Lysergic acid (LSD, shown below) is a carboxylic acid with hallucinogenic properties. Use curved arrows to push electrons to show the bonds made and broken. Complete the chemical equation for the proton transfer between this carboxylic acid and aqueous sodium hydroxide (NaOH) by drawing the reaction products. Label and bracket the conjugate acid-base pairs. Does the equilibrium favor reactants or products? Given that the pK_a of lysergic acid is 3 and the pK_a of water is 16, calculate the equilibrium...
grams of KHP 0.6413 mL NaOH needed to titrate KhP to endpoint 38.80 Grams of unknown...
grams of KHP 0.6413
mL NaOH needed to titrate KhP to endpoint 38.80
Grams of unknown acid: 1.5106
mL NaOH needed to titrate unknown acid to endpoint
33.55
need to know molarity of NaOH solution and Molar mass of
unknown acid. Please help and show work!
CHEM 265 LAB EXPERIMENT NUMBER 4 DETERMINATION OF THE MW OF AN UNKNOWN ACID This experiment utilizes a titration to determine the molecular weight of an unknown acid. In this experiment, the endpoint of...
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...
According to the following reaction: KHP + NaOH a NaKP + H_2O What is the concentration...
According to the following reaction: KHP + NaOH a NaKP + H_2O What is the concentration of the NaOH if it look 42.52 mL to titrate 0.835 g of KHP? (MM KHP = 204.2 g/mol) According to the following equation, how many ml of 0.15 M NaOH would be needed to titrate 10.00 ml of 0.500 M HCl? HCl + NaOH a NaCI + H_2O What is the pH of a 0.33 M solution of HCl? What is the [H+]...
Equivalence Point for Titration #1: 24.96
mL
Equivalence Point for Titration #2: 25.40
mL
Equivalence Point for Titration #3: 25.20
mL
Midpoint pH for Titration #3: 9.80
QUESTIONS:
4) Set up the calculation required to determine
the concentration of the NaOH solution via titration of a given
amount of KHP. Include all numbers except the given mass of
KHP.
5) Set up the calculation required to determine
the concentration of the unknown strong acid via titration with a
known volume...
Part 3: Working with the Titration Curve for a Polyprotic Acid and Strong Base Consider carbonic acid, H.CO, (which is polyprotic) - a) Write the multi-step dissociation equilibrium for this acid in water (ie, there should be three chemical dissociation stages connected by two equilibrium arrows, given below): b) Below is an idealized titration curve showing the exhibited pH for 25.00 mL of a 0.100 M aqueous carbonic acid solution as a function of added 0.100 M NaOH in units...
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...
Weak Acid-Strong Base Titration Date Nanse PRE-LAB OUESTIONS 1 Calculate the molarity of a NaOH solution that was used to titrate 1.2 g of potassium acid phthalate if 37.50 ml of the base were reauired to get to the end point of the titration. 2 It takes 12.45 ml. of a 0.500 M NaOH solution larity of the acid to titrate 30.0 mL of acetic acid. What is the mo- 3. Using the titration curve below, calculate the K, of...
Lysergic acid (LSD, shown below) is a carboxylic acid with hallucinogenic properties. Use curved arrows to push electrons to show the bonds made and broken. Complete the chemical equation for the proton transfer between this carboxylic acid and aqueous sodium hydroxide (NaOH) by drawing the reaction products. Label and bracket the conjugate acid-base pairs. Does the equilibrium favor reactants or products? Given that the pK_a of lysergic acid is 3 and the pK_a of water is 16, calculate the equilibrium...
grams of KHP 0.6413
mL NaOH needed to titrate KhP to endpoint 38.80
Grams of unknown acid: 1.5106
mL NaOH needed to titrate unknown acid to endpoint
33.55
need to know molarity of NaOH solution and Molar mass of
unknown acid. Please help and show work!
CHEM 265 LAB EXPERIMENT NUMBER 4 DETERMINATION OF THE MW OF AN UNKNOWN ACID This experiment utilizes a titration to determine the molecular weight of an unknown acid. In this experiment, the endpoint of...
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...
According to the following reaction: KHP + NaOH a NaKP + H_2O What is the concentration of the NaOH if it look 42.52 mL to titrate 0.835 g of KHP? (MM KHP = 204.2 g/mol) According to the following equation, how many ml of 0.15 M NaOH would be needed to titrate 10.00 ml of 0.500 M HCl? HCl + NaOH a NaCI + H_2O What is the pH of a 0.33 M solution of HCl? What is the [H+]...
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