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Problem of the Day 9 1. Squaric acid is a diprotic acid (it can lose two...
9. Ascorbic acid (vitamin C) is a diprotic acid, H2C6H6O6. Ka1 = 7.9 x 10-5 ,...
9. Ascorbic acid (vitamin C) is a diprotic acid, H2C6H6O6. Ka1 = 7.9 x 10-5 , Ka2 = 1.6 x 10-12 a. (6 points) Write the dissociation reactions for the loss of the two protons. Could someone explain how to do this problem?
Question 9 1 pts Suppose you have an indicator that is diprotic and has pK 1...
Question 9 1 pts Suppose you have an indicator that is diprotic and has pK 1 - 3 and pK2 - 7. If Heln is yellow, Hin'is red, and In2-is blue what species is/are significantly present at pH of 7? what is the color of the indicator at a pH of 7? (Select Question 10 1 pts Indicators are commonly used during titrations to monitor the point at which an acid has fully been converted to its conjugate base for...
A diprotic acid has two protons that each have their own Ka values. In a titration...
A diprotic acid has two protons that each have their own Ka values. In a titration with a diprotic acid, we see the following two reactions occurring in sequence: H2A(aq) + OH-(aq) <--> HA-(aq) + H2O(l) HA-(aq) + OH-(aq) <--> A2-(aq) + H2O(l) The sum of these equations is: H2A(aq) + 2 OH-(aq) <--> A2-(aq) + 2 H2O(l) Select all of the following that are true: HA- is formed by the reaction of base with a diprotic acid If one mole of...
Can someone tell me why 5.b reaction 1 have larger K value? The answer key said...
Can someone tell me why 5.b reaction 1 have larger K value? The
answer key said the Electron negativity stabilized the charge
created. I dont understand. Can someone explain
5.A. Water and ammonia react together in an acid base reaction. Predict the products of the following two reaction following the labels given to each of the reactants. (6 pts) Но rxn 1 H20 NH3 acid base conjugate base conjugate acid rxn 2 H20 NH3 ba acid conjugate acid conjugate base...
Titration: Acids and Bases 2. How can you determine which acid is diprotic? 3. using the...
Titration: Acids and Bases
2. How can you determine which acid is diprotic?
3. using the answers to questions one and two, which acid is
diprotic?
4. Which base has more hydroxide ions per molecule?
Acid Volume Base Base Initial Volume (mL) Base Final Volume (mL) Volume of Base Used (mL) Acid: Base Ratio Acid 1 20 mL Base 1 50 mL 34.5 15.5 4:3 Acid 2 20 mL Base 1 Acid 1 20 mL Base 2 Acid 2 20...
0/1 pts Inooreat Question 9 Suppose W is a subspace of R" spanned by n nonzero...
0/1 pts Inooreat Question 9 Suppose W is a subspace of R" spanned by n nonzero orthogonal vectors. Explain why WR Two subspaces are the same when one subspace is a subset of the other subspace. Two subspaces are the same when they are spanned by the same vectors Two subspaces are the same when they are subsets of the same space Two subspaces are the same when they have the same dimension Incorrect 0/1 pts Question 10 Let U...
Page Chemistry 107 Midterm II Review Problems Draw a Lewis structure for CaHN (think over the...
Page Chemistry 107 Midterm II Review Problems Draw a Lewis structure for CaHN (think over the bonding preferences of each atom when you lay out the skeleton of this molecule!) 1. CC Determine the geometry at each "central atom" (a) Does this molecule have any polar bonds? Is the entire molecule polar? (b) What will be the dominant intermolecular force in a sample of this compound? (c) (c) If you had 100.0 g of this compound, how many moles would...
Please help with 9-13 Beginning with your 50 mL solution of sulfuric acid, begin to titrate...
Please help with 9-13
Beginning with your 50 mL solution of sulfuric acid, begin to titrate in your 0.1 M solution of NaOH slowly. When the solution turns pink, stop and record the amount of NaOH used To begin the procedure click next 3 29mL NaOH MacBook Air 5 9 0 Question #9: Using the amount of Base used in step three, determine the concentration of the acid. Using the equations below, pick the correct option for this specific acid....
show all work please thank you!! 9. (4 pts) Trifluoroacetic acid (CF3CO2H; pk, = 0.23) and...
show all work please thank you!!
9. (4 pts) Trifluoroacetic acid (CF3CO2H; pk, = 0.23) and acetic acid (CH3CO2H; pka = 4.75) are monoprotic acids (meaning they can dissociate only one H+ ion/molecule of acid). Using your knowledge of structure, explain why the acid dissociation (Ka) of acetic acid is greater than that for trifluoroacetic acid. Place your answer in the space provided. indisht n.....
4. Consider phosphonic acid, an inorganic acid that has both the empirical and molecular formua HaPOs......
4. Consider phosphonic acid, an inorganic acid that has both the empirical and molecular formua HaPOs... a. (4 pts) Draw the most stable Lewis electron dot structure for HaPOs containing one double bond and no formal charges. Place your answer in the space provided. HaPOs with one double bond b. (3 pts) What is the orbital hybridization at phosphorus in your answer to part (a)? (4 pts) Draw the most stable Lewis electron dot structure for HaPOs containing no double...
Question 9 1 pts Suppose you have an indicator that is diprotic and has pK 1 - 3 and pK2 - 7. If Heln is yellow, Hin'is red, and In2-is blue what species is/are significantly present at pH of 7? what is the color of the indicator at a pH of 7? (Select Question 10 1 pts Indicators are commonly used during titrations to monitor the point at which an acid has fully been converted to its conjugate base for...
Can someone tell me why 5.b reaction 1 have larger K value? The
answer key said the Electron negativity stabilized the charge
created. I dont understand. Can someone explain
5.A. Water and ammonia react together in an acid base reaction. Predict the products of the following two reaction following the labels given to each of the reactants. (6 pts) Но rxn 1 H20 NH3 acid base conjugate base conjugate acid rxn 2 H20 NH3 ba acid conjugate acid conjugate base...
Titration: Acids and Bases
2. How can you determine which acid is diprotic?
3. using the answers to questions one and two, which acid is
diprotic?
4. Which base has more hydroxide ions per molecule?
Acid Volume Base Base Initial Volume (mL) Base Final Volume (mL) Volume of Base Used (mL) Acid: Base Ratio Acid 1 20 mL Base 1 50 mL 34.5 15.5 4:3 Acid 2 20 mL Base 1 Acid 1 20 mL Base 2 Acid 2 20...
0/1 pts Inooreat Question 9 Suppose W is a subspace of R" spanned by n nonzero orthogonal vectors. Explain why WR Two subspaces are the same when one subspace is a subset of the other subspace. Two subspaces are the same when they are spanned by the same vectors Two subspaces are the same when they are subsets of the same space Two subspaces are the same when they have the same dimension Incorrect 0/1 pts Question 10 Let U...
Page Chemistry 107 Midterm II Review Problems Draw a Lewis structure for CaHN (think over the bonding preferences of each atom when you lay out the skeleton of this molecule!) 1. CC Determine the geometry at each "central atom" (a) Does this molecule have any polar bonds? Is the entire molecule polar? (b) What will be the dominant intermolecular force in a sample of this compound? (c) (c) If you had 100.0 g of this compound, how many moles would...
Please help with 9-13
Beginning with your 50 mL solution of sulfuric acid, begin to titrate in your 0.1 M solution of NaOH slowly. When the solution turns pink, stop and record the amount of NaOH used To begin the procedure click next 3 29mL NaOH MacBook Air 5 9 0 Question #9: Using the amount of Base used in step three, determine the concentration of the acid. Using the equations below, pick the correct option for this specific acid....
show all work please thank you!!
9. (4 pts) Trifluoroacetic acid (CF3CO2H; pk, = 0.23) and acetic acid (CH3CO2H; pka = 4.75) are monoprotic acids (meaning they can dissociate only one H+ ion/molecule of acid). Using your knowledge of structure, explain why the acid dissociation (Ka) of acetic acid is greater than that for trifluoroacetic acid. Place your answer in the space provided. indisht n.....
4. Consider phosphonic acid, an inorganic acid that has both the empirical and molecular formua HaPOs... a. (4 pts) Draw the most stable Lewis electron dot structure for HaPOs containing one double bond and no formal charges. Place your answer in the space provided. HaPOs with one double bond b. (3 pts) What is the orbital hybridization at phosphorus in your answer to part (a)? (4 pts) Draw the most stable Lewis electron dot structure for HaPOs containing no double...
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