Homework Answers
Dihydrogen pohosphate is H2PO4-
When it acts as acid, it will donate H+
The compound formed from H2PO4- when it donates H+ is HPO42-
The reaction would be:
H2PO4- <-> H+ + HPO42-
Answer: option 1
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The chemical equation when the dihydrogen phosphate ion functions as a weak acid would be written...
Calculation Henderson–Hasselbalch equation: • A different buffer is made with 0.4122 M dihydrogen phosphate ion and...
Calculation Henderson–Hasselbalch equation: • A different buffer is made with 0.4122 M dihydrogen phosphate ion and 0.8733 M hydrogen phosphate ion. Phosphoric acid (H3PO4 ) has values of Ka1 = 1.20×10-2 , Ka2 = 1.95×10-7 , and Ka3 = 3.02×10-12 . • What is the pH of the buffer just described?
Worksheet 19 Titration of Polyprotic Acids Name: 1. Calculate the sulfite ion [SO3'] concentration in a...
Worksheet 19 Titration of Polyprotic Acids Name: 1. Calculate the sulfite ion [SO3'] concentration in a 0.123 M solution of the weak acid, sulfurous acid (H2SO3). The stepwise dissociation constants of carbonic acid are: Ka1 1.41 x 102 Ka2-6.31 x 108 3. Consider the following dissociation of the triprotic acid, phosphoric acid (HsPOs): Step 1 H3POa + H2O <=> H30+ + H2PO4, Step 2 HP0i + H2O <=> H30+ + HP042- Step 3 HPO42-+ H2O <-> H3O+ + PO43- Kal=7.1...
Phosphorous acid dissociates to form dihydrogen phosphate and hydronium ion. Phosphorous acid has K_a of 5.0...
Phosphorous acid dissociates to form dihydrogen phosphate and hydronium ion. Phosphorous acid has K_a of 5.0 times 10^2 Write the equation dissociation for phosphorous acid. Express your answer as a chemical equation. Identify all of the phases in your answer. What is the expression constant dissociation for phosphorous acid? K_a = [H_2 PO_3]/[H_3 PO_3] K_a = [H_3 PO_3]/[H_3 O^+] [H_2 PO_3] K_a = [H_3 O^+] [H_2 PO_3]/[H_3 PO_3] K_a = [H_3 O^+] [H_2 PO_3]/[H_2 PO_3]^2
< 2 of 30 Review | Constants | Periodic Tab Balancing equations with polyatomic ions When...
< 2 of 30 Review | Constants | Periodic Tab Balancing equations with polyatomic ions When balancing chemical equations with polyatomic ions, it may help to balance the ion as a whole. For example, the ion Podca be treated as a unit and balanced in both the reactants and the product, or you can break it down and balance each atom separately Part B Phosphoric acid reacts with magnesium hydroxide to produce magnesium phosphate and water via the following reaction:...
the Ka of a nonprotic weak acid is .00419. what is the percent ionization of a .185 M solution of this acid? © Assig...
the Ka of a nonprotic weak acid is .00419. what is the percent
ionization of a .185 M solution of this acid?
© Assignment 2700/2800 Resources Ex Give Up? Feedback Try Again Score: < Question 19 of 28 > Attempt 5 The K, of a monoprotic weak acid is 0.00419. What is the percent ioniza < Feedback percent ionization: 46.5 percent ionization: 46.5 The chemical equation for the ionization of a monoprotic weak acid is HA(aq) = H(aq) + A™(aq)...
When dealing with buffer systems, we often use the acid reaction to determine the equilibrium and...
When dealing with buffer systems, we often use the acid reaction to determine the equilibrium and set up the ICE table. The most common experimental method used to study acid-base systems is titration, which studies the stoichiometric addition of the acid to a base solution or the base to an acid solution to determine the value of K, or K, The value of the pK, or pK, is essential to the understanding of the buffer system, where pK, = -log...
0 TOXO 9. When a weak acid and a strong base are mixed, the resulting pH...
0 TOXO 9. When a weak acid and a strong base are mixed, the resulting pH will be <7/7/>7 (circle the correct answer). 10. For Lewis acids and bases, the base is defined as an electron pair donor / acceptor (circle the correct answer). 11. When comparing anions from the same period, higher electronegativity of A in the H-A bond increases / decreases (circle the correct answer) acid strength. 12. When comparing anions from the same group, larger size of...
Which one of the following salts, when dissolved in water, produces the solution with the highest...
Which one of the following salts, when dissolved in water, produces the solution with the highest pH? HINT: Remember that BASES have high pH. Mgo CH3NH31 LICIO4 O NaHSO4 Which of the following are weak diprotic acids? hydrocyanic acid - HCN, sulfuric acid - H2SO4, phosphoric acid - H3PO4 carbonic acid - H2CO3, hydrosulfuric acid - H2S, acetic acid - CH3COOH O carbonic acid - H2CO3, oxalic acid - H2C2O4, sulfurous acid - H2SO3 formic acid - HCOOH, acetic acid...
Test Data would be as follows: Using java language. Build an expression tree. • When you...
Test Data would be as follows:
Using java language. Build an expression tree. • When you see a number: o you create a new node with the number as the data. o Then you push the new node to the stack. . When you see a binary operator: 0 You create a new Node for the operator. Then you pop and set the right child. Then you pop and set the left child o Then you push the new node...
A buffer solution is able to maintain a constant pH when small amounts of acid or...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
Worksheet 19 Titration of Polyprotic Acids Name: 1. Calculate the sulfite ion [SO3'] concentration in a 0.123 M solution of the weak acid, sulfurous acid (H2SO3). The stepwise dissociation constants of carbonic acid are: Ka1 1.41 x 102 Ka2-6.31 x 108 3. Consider the following dissociation of the triprotic acid, phosphoric acid (HsPOs): Step 1 H3POa + H2O <=> H30+ + H2PO4, Step 2 HP0i + H2O <=> H30+ + HP042- Step 3 HPO42-+ H2O <-> H3O+ + PO43- Kal=7.1...
Phosphorous acid dissociates to form dihydrogen phosphate and hydronium ion. Phosphorous acid has K_a of 5.0 times 10^2 Write the equation dissociation for phosphorous acid. Express your answer as a chemical equation. Identify all of the phases in your answer. What is the expression constant dissociation for phosphorous acid? K_a = [H_2 PO_3]/[H_3 PO_3] K_a = [H_3 PO_3]/[H_3 O^+] [H_2 PO_3] K_a = [H_3 O^+] [H_2 PO_3]/[H_3 PO_3] K_a = [H_3 O^+] [H_2 PO_3]/[H_2 PO_3]^2
< 2 of 30 Review | Constants | Periodic Tab Balancing equations with polyatomic ions When balancing chemical equations with polyatomic ions, it may help to balance the ion as a whole. For example, the ion Podca be treated as a unit and balanced in both the reactants and the product, or you can break it down and balance each atom separately Part B Phosphoric acid reacts with magnesium hydroxide to produce magnesium phosphate and water via the following reaction:...
the Ka of a nonprotic weak acid is .00419. what is the percent
ionization of a .185 M solution of this acid?
© Assignment 2700/2800 Resources Ex Give Up? Feedback Try Again Score: < Question 19 of 28 > Attempt 5 The K, of a monoprotic weak acid is 0.00419. What is the percent ioniza < Feedback percent ionization: 46.5 percent ionization: 46.5 The chemical equation for the ionization of a monoprotic weak acid is HA(aq) = H(aq) + A™(aq)...
When dealing with buffer systems, we often use the acid reaction to determine the equilibrium and set up the ICE table. The most common experimental method used to study acid-base systems is titration, which studies the stoichiometric addition of the acid to a base solution or the base to an acid solution to determine the value of K, or K, The value of the pK, or pK, is essential to the understanding of the buffer system, where pK, = -log...
0 TOXO 9. When a weak acid and a strong base are mixed, the resulting pH will be <7/7/>7 (circle the correct answer). 10. For Lewis acids and bases, the base is defined as an electron pair donor / acceptor (circle the correct answer). 11. When comparing anions from the same period, higher electronegativity of A in the H-A bond increases / decreases (circle the correct answer) acid strength. 12. When comparing anions from the same group, larger size of...
Which one of the following salts, when dissolved in water, produces the solution with the highest pH? HINT: Remember that BASES have high pH. Mgo CH3NH31 LICIO4 O NaHSO4 Which of the following are weak diprotic acids? hydrocyanic acid - HCN, sulfuric acid - H2SO4, phosphoric acid - H3PO4 carbonic acid - H2CO3, hydrosulfuric acid - H2S, acetic acid - CH3COOH O carbonic acid - H2CO3, oxalic acid - H2C2O4, sulfurous acid - H2SO3 formic acid - HCOOH, acetic acid...
Test Data would be as follows:
Using java language. Build an expression tree. • When you see a number: o you create a new node with the number as the data. o Then you push the new node to the stack. . When you see a binary operator: 0 You create a new Node for the operator. Then you pop and set the right child. Then you pop and set the left child o Then you push the new node...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
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