Homework Answers
Add Answer to:
please help with this hw ?!
Answer the Q. In the spaces below. Use the back...
CHM 202F19 HW 9B Name Answer the q. in the spaces below. Use the back of...
CHM 202F19 HW 9B Name Answer the q. in the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO; CHO DOH e) HPO4 Ansa) b) c) d) 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) 0,2 b) HPO4? c) H2PO4 d) NH) e) NH3 Ans. a) _ d) e) 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4....
CHM 202F19 HW 9B Name Answer the Q. in the spaces below. Use the back of the page if necessary. 1. Give the conjuga...
CHM 202F19 HW 9B Name Answer the Q. in the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO3 c) H20 d) OH e) H3PO. Ans. a) 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) CO32 b) HPO 2 c) H2PO. d)NH2 e) NH3 Ans. a) b) _ 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4. Show...
please help 3. calculate the pH of a 025 solution of bantum hydroende 3. Calculate the...
please help
3. calculate the pH of a 025 solution of bantum hydroende 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4. Show how formic acid, HCOOH, dissociates in aqueous solution and calculate the pH of a 0.25 M solution. Ka = 1.8 x 104
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...
please show me how to answer these 13. Which of the following combinations would be best...
please show me how to answer these
13. Which of the following combinations would be best to buffer an aqueous solution at a pH of 2.0? a. H3PO4 and H2PO4, Kat = 7.5 x 103 b. HNO2 and NO2, Ka 4.5 x 10 c. CH3COOH and CH3COO, Ka 1.8 x 105 d. H2PO and HPO 2, Ka2 6.2x 10 14. Molecules or ions that can alternately behave as either a Bronsted-Lowry acid or base are called a. polyanions b. hydronium...
Question II- Answer by False or True , if a statement is False , please correct...
Question II- Answer by False or True , if a statement is False , please correct it. 1- H2PO4 is a conjugate base of HPO42 and also amphoteric. 2- Benzoic acid( Ka = 6.5 x105) can be used to prepare efficient buffer of pH =6. 3- If excess NaOH dissolves Al(OH)only in a Mixture of Fe(OH)3/ Al(OH)3 this means that Fe(OH)3 is amphoteric substance. 4- Addition of NH4 CI(CI,NH4+) to a solution of NH4OH (NH4+, OH) will enhances its ionization....
i want answer to all questions please Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the so...
i want answer to all questions please
Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the solution, which of the four species shown would experience an increase in concentration? A) BH B)H C) HO D)B E None of the species would increase in concentration. Answer: ( 30) What is true about a solution whose pH is less than 7 at 25°C? A) It has...
36) Which one of the following is not a strong acid? (or a weak electrolyte?) a) HNO )HCI HI )HF e) HCIO Answer: 37) The is the conjugate species that remains after an acid donates a proton is ca...
36) Which one of the following is not a strong acid? (or a weak electrolyte?) a) HNO )HCI HI )HF e) HCIO Answer: 37) The is the conjugate species that remains after an acid donates a proton is called its conjugate base. What base of the hydronium ion, HO? B)HO C)HO D)H E HO'has no conjugate base. Answer: acid-base pair? 38) For the reaction shown below, which of the following is a conjugate acid A)CHsN, H:0 B) CsH,N, CsH,NH' C)...
please explain how you got all your answers 10. Calculate the pH of a 0.30 M...
please explain how you got all your answers
10. Calculate the pH of a 0.30 M formic acid solution. (K-1.8 x 10") Weak monoprotic acid. 11. Calculate the K, for a 0.050 M solution of HA (weak acid) if the pH = 4.65. 12. What is the pH of the solution which results from mixing 50.0 mL of 0.30 M HF(aq) and 50.0 mL of 0.30 M NaOH(aq) at 25C? (K. of F = 1.4 x 10) 13. Which of...
Worksheet Week 10 Name: 1. During strenuous exercise lactic acid builds up in a muscle tissues....
Worksheet Week 10 Name: 1. During strenuous exercise lactic acid builds up in a muscle tissues. In a 1.00 Maqueous solution 2.94% of lactic acid is ionized. What is the value of its ka? 2. At equilibrium of (H') in a 0.250 M solution of an unknown acid is 4.07 x 10 M. Determine the degree of ionization and the Ka of this acid. 3. The venom of biting ants contains formic acid, HCOOH, Ka = 1.8 x 10-Mat 25°C....
CHM 202F19 HW 9B Name Answer the q. in the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO; CHO DOH e) HPO4 Ansa) b) c) d) 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) 0,2 b) HPO4? c) H2PO4 d) NH) e) NH3 Ans. a) _ d) e) 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4....
CHM 202F19 HW 9B Name Answer the Q. in the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO3 c) H20 d) OH e) H3PO. Ans. a) 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) CO32 b) HPO 2 c) H2PO. d)NH2 e) NH3 Ans. a) b) _ 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4. Show...
please help
3. calculate the pH of a 025 solution of bantum hydroende 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4. Show how formic acid, HCOOH, dissociates in aqueous solution and calculate the pH of a 0.25 M solution. Ka = 1.8 x 104
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...
please show me how to answer these
13. Which of the following combinations would be best to buffer an aqueous solution at a pH of 2.0? a. H3PO4 and H2PO4, Kat = 7.5 x 103 b. HNO2 and NO2, Ka 4.5 x 10 c. CH3COOH and CH3COO, Ka 1.8 x 105 d. H2PO and HPO 2, Ka2 6.2x 10 14. Molecules or ions that can alternately behave as either a Bronsted-Lowry acid or base are called a. polyanions b. hydronium...
Question II- Answer by False or True , if a statement is False , please correct it. 1- H2PO4 is a conjugate base of HPO42 and also amphoteric. 2- Benzoic acid( Ka = 6.5 x105) can be used to prepare efficient buffer of pH =6. 3- If excess NaOH dissolves Al(OH)only in a Mixture of Fe(OH)3/ Al(OH)3 this means that Fe(OH)3 is amphoteric substance. 4- Addition of NH4 CI(CI,NH4+) to a solution of NH4OH (NH4+, OH) will enhances its ionization....
i want answer to all questions please
Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the solution, which of the four species shown would experience an increase in concentration? A) BH B)H C) HO D)B E None of the species would increase in concentration. Answer: ( 30) What is true about a solution whose pH is less than 7 at 25°C? A) It has...
36) Which one of the following is not a strong acid? (or a weak electrolyte?) a) HNO )HCI HI )HF e) HCIO Answer: 37) The is the conjugate species that remains after an acid donates a proton is called its conjugate base. What base of the hydronium ion, HO? B)HO C)HO D)H E HO'has no conjugate base. Answer: acid-base pair? 38) For the reaction shown below, which of the following is a conjugate acid A)CHsN, H:0 B) CsH,N, CsH,NH' C)...
please explain how you got all your answers
10. Calculate the pH of a 0.30 M formic acid solution. (K-1.8 x 10") Weak monoprotic acid. 11. Calculate the K, for a 0.050 M solution of HA (weak acid) if the pH = 4.65. 12. What is the pH of the solution which results from mixing 50.0 mL of 0.30 M HF(aq) and 50.0 mL of 0.30 M NaOH(aq) at 25C? (K. of F = 1.4 x 10) 13. Which of...
Worksheet Week 10 Name: 1. During strenuous exercise lactic acid builds up in a muscle tissues. In a 1.00 Maqueous solution 2.94% of lactic acid is ionized. What is the value of its ka? 2. At equilibrium of (H') in a 0.250 M solution of an unknown acid is 4.07 x 10 M. Determine the degree of ionization and the Ka of this acid. 3. The venom of biting ants contains formic acid, HCOOH, Ka = 1.8 x 10-Mat 25°C....
Most questions answered within 3 hours.
-
4. Without doing any calculations, predict whether the observed
∆T would increase, decrease or remain the...
asked 1 hour ago -
Based on the range, which of the following sets of scores has
the greatest variability? 3,...
asked 2 hours ago -
Ripples in a pond travel at a velocity of 3 m/s with one peak
passing a...
asked 2 hours ago -
A man stands on the roof of a building of height 13.0 mm and
throws a...
asked 2 hours ago -
The extent to which assets are financed by borrowed funds and
other liabilities is indicated by:...
asked 3 hours ago -
Explain in detail
Germany is the fifth largest economy
explain what goods and services Germany specializes...
asked 3 hours ago -
The density of platinum is 21.45 g/mL. If a cube of platinum
with a mass of...
asked 3 hours ago -
Accounts Receivable
Sales
A/R Posting
Extended Sales Invoice
Packing Slip
Compare invoice to packing slip 2...
asked 3 hours ago -
Michaella, age 23, is a full-time law student and is claimed by
her parents as a...
asked 3 hours ago -
Why are polymers not typically casted into products?
asked 3 hours ago -
When rolling a die 129 times, what is the probability of rolling
a 6 no more...
asked 4 hours ago -
4. A call option currently sells for $7.75. It has a strike
price of $85 and...
asked 4 hours ago