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Question 16 of 24 Determine the pH of a buffer that is 0.55 M HNO2 and...
Question 16 of 24 Determine the pH of a buffer that is 0.55 M HNO2 and 0.75 M KNO2. The value of Ka for HNO, is 6.8 x 10-4 1 2 3 NEXT Based on the given values, set up ICE table in order to determine the unknown. HNO3(aq) + H2O(1) H,O*(aq) + NO, (aq) Initial (M) Change (M) Equilibrium (M) RESET 2x 0 0.55 0.75 6.8.10 0.55. 2x 0.56 - 2x 0.75 + x 0.75 - X 0.55 -...
please answer both question. if cant please answer the question numer 3 2. How many grams...
please answer both question. if cant please answer the
question numer 3
2. How many grams of NaF would have to be added to 2.00 L of 0.100 M HF to yield a solution with a pH = 4.00? Assume the volume of the solution remains at 2,00 L after the NaF is added. (a) 300 g (6) 36 g (c) 0.84 g (d) 6.9 g (e) 60. g 3. What is the pH at the equivalence point in the...
please answer both questions QUESTION 8 The compound ammonia, NH3, is a weak base when dissolved...
please answer both questions
QUESTION 8 The compound ammonia, NH3, is a weak base when dissolved in water. Which of the following is the correct equation for the reaction of ammonia in water? a NH3(aq) + H20(0) NH4(aq) + OH(aq) NH3(aq) + OH(aq) NH2 (aq) + H20(0) NH3(aq) + H20(1) -NH2 (aq) + H30*(aq) NH3(aq) + H200) NH2 (aq) + H30(aq) NH3(aq) + H30aq) NH4+ (aq) + H20(0) QUESTION 9 What is the pH of a solution that is 0.17...
RUVILUULI Q. #1. The equilibrium constant for the auto-ionization of water 2H30 (I) = H3O'(aq) +...
RUVILUULI Q. #1. The equilibrium constant for the auto-ionization of water 2H30 (I) = H3O'(aq) + OH(aq) is 1.0 x 10-4 at 25°C and 3.8 x 10-14 at 40°C. Is the forward process endothermic or exothermic? Need to show your calculation. Ans: exothermic Q. #2. If you have 0.040 M solution two strong acids like HCI and H2SO, which one do you think would have behaves as stronger acids? Explain your answer with ICE table and relevant calculation. K for...
What is the answer for 11, 12, and 14? and please show how you calculate it!...
What is the answer for 11, 12, and 14? and please show how you
calculate it!
11). (4 pts) What is the approximate degree of dissociation of a 0.5 M solution of butyric acid? 10g LHT Butyric acid is responsible for the odor in rancid butter and has a pKa of 4.82. 109ci.61x(0 A) 0.55 % B)4.5 % C) 5.5 % D) 99.9% E) None of these choices are correct. 12). (4 pts) has a pH of 1.9. What is...
please help >< Polyprotic acids have more than one proton to donate to water, therefore have...
please help ><
Polyprotic acids have more than one proton to donate to water, therefore have more than one equilibrium constant for proton donation. For phosphoric acid, there is a three-step equilibrium: H, PO +H,0 5 H2PO4 + H30* H,PO," +H,0 5 HPO - +H30* HPO 2- +,0 5 PO.- +,0* Kai = 7.11 x 10-3 Ka2 = 6.32 x 10-8 Ka; = 4.5 x 10-13 For all conjugate acid base pairs: K, XKK where K is for the reaction...
Which of the following expressions is the correct equilibrium-constant expression for the reaction below? 200(g) =...
Which of the following expressions is the correct equilibrium-constant expression for the reaction below? 200(g) = CO2(g) + C(s) A. [CO][C]/[CO] B. K [CO] C. [CO] / [CO2) D. [CO]/[CO] E. 2[CO] /[CO][C] In which of the following reactions would increasing pressure at constant temperature not change the concentrations of reactants and products, based on Le Châtelier's principle? ООООО A. 2N, () + 0,02N,0 () B. N.O. (g) 2NO, (g) C. N2(g) + 3H2(g)2NH3 (9) D. N2 (9) + 202...
14. Calculate the pH of 26 x 102 M KOH. (1) 1241 (2)1550 (3)208 47 15....
14. Calculate the pH of 26 x 102 M KOH. (1) 1241 (2)1550 (3)208 47 15. Calculate the H* ion cancentration in lemon juice having a pH of 2 40 (1)401 00 59 4.0-10-ง M (2) 250 M the [H'] in offee than in neutral water? manganese(l) cartonate (MncO] is 42x 10 M. What is Kap for this oompound? (3) 0.38 M 440x0M 16. The pH of coffee is approximately 5.0. How mamy times groater is (1) 200 (2) 100...
question 2 and 3 could be answer is a complete question Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following stateme...
question 2 and 3 could be answer is a complete question
Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following statement should be true? Statement (I): The concentration of fluoride ion F will decrease. Statement (Il): The pH of the buffer will decrease. Statement (IIl): The concentration of H30* will decrease. a) (0) b) (l) c) (IlI) d)(0) and () e) (0) and (II) f...
if you can't answer all ,please don't answer 1) of the reactions below, which one is...
if you can't answer all ,please don't answer
1) of the reactions below, which one is a decomposition reaction? A) Ca(NO3)2 + Na2S -- CdS +2NaNO3 B) NH4Cl- NH3 + HCI C) 2Mg + 02 - 2MgO D) 2N2 + 3H2 → 2NH3 E) 2CH4 + 402 - 2002 + 4H20 miches of - x 1? 2 2) Calculate the percentage by mass of ammonia in cisplatin, PtCl2/NH3 12. A) 12.53 B) 5.68 C) 18.09 D) 11.35 E) 4.67 3)...
Question 16 of 24 Determine the pH of a buffer that is 0.55 M HNO2 and 0.75 M KNO2. The value of Ka for HNO, is 6.8 x 10-4 1 2 3 NEXT Based on the given values, set up ICE table in order to determine the unknown. HNO3(aq) + H2O(1) H,O*(aq) + NO, (aq) Initial (M) Change (M) Equilibrium (M) RESET 2x 0 0.55 0.75 6.8.10 0.55. 2x 0.56 - 2x 0.75 + x 0.75 - X 0.55 -...
please answer both question. if cant please answer the
question numer 3
2. How many grams of NaF would have to be added to 2.00 L of 0.100 M HF to yield a solution with a pH = 4.00? Assume the volume of the solution remains at 2,00 L after the NaF is added. (a) 300 g (6) 36 g (c) 0.84 g (d) 6.9 g (e) 60. g 3. What is the pH at the equivalence point in the...
please answer both questions
QUESTION 8 The compound ammonia, NH3, is a weak base when dissolved in water. Which of the following is the correct equation for the reaction of ammonia in water? a NH3(aq) + H20(0) NH4(aq) + OH(aq) NH3(aq) + OH(aq) NH2 (aq) + H20(0) NH3(aq) + H20(1) -NH2 (aq) + H30*(aq) NH3(aq) + H200) NH2 (aq) + H30(aq) NH3(aq) + H30aq) NH4+ (aq) + H20(0) QUESTION 9 What is the pH of a solution that is 0.17...
RUVILUULI Q. #1. The equilibrium constant for the auto-ionization of water 2H30 (I) = H3O'(aq) + OH(aq) is 1.0 x 10-4 at 25°C and 3.8 x 10-14 at 40°C. Is the forward process endothermic or exothermic? Need to show your calculation. Ans: exothermic Q. #2. If you have 0.040 M solution two strong acids like HCI and H2SO, which one do you think would have behaves as stronger acids? Explain your answer with ICE table and relevant calculation. K for...
What is the answer for 11, 12, and 14? and please show how you
calculate it!
11). (4 pts) What is the approximate degree of dissociation of a 0.5 M solution of butyric acid? 10g LHT Butyric acid is responsible for the odor in rancid butter and has a pKa of 4.82. 109ci.61x(0 A) 0.55 % B)4.5 % C) 5.5 % D) 99.9% E) None of these choices are correct. 12). (4 pts) has a pH of 1.9. What is...
please help ><
Polyprotic acids have more than one proton to donate to water, therefore have more than one equilibrium constant for proton donation. For phosphoric acid, there is a three-step equilibrium: H, PO +H,0 5 H2PO4 + H30* H,PO," +H,0 5 HPO - +H30* HPO 2- +,0 5 PO.- +,0* Kai = 7.11 x 10-3 Ka2 = 6.32 x 10-8 Ka; = 4.5 x 10-13 For all conjugate acid base pairs: K, XKK where K is for the reaction...
Which of the following expressions is the correct equilibrium-constant expression for the reaction below? 200(g) = CO2(g) + C(s) A. [CO][C]/[CO] B. K [CO] C. [CO] / [CO2) D. [CO]/[CO] E. 2[CO] /[CO][C] In which of the following reactions would increasing pressure at constant temperature not change the concentrations of reactants and products, based on Le Châtelier's principle? ООООО A. 2N, () + 0,02N,0 () B. N.O. (g) 2NO, (g) C. N2(g) + 3H2(g)2NH3 (9) D. N2 (9) + 202...
14. Calculate the pH of 26 x 102 M KOH. (1) 1241 (2)1550 (3)208 47 15. Calculate the H* ion cancentration in lemon juice having a pH of 2 40 (1)401 00 59 4.0-10-ง M (2) 250 M the [H'] in offee than in neutral water? manganese(l) cartonate (MncO] is 42x 10 M. What is Kap for this oompound? (3) 0.38 M 440x0M 16. The pH of coffee is approximately 5.0. How mamy times groater is (1) 200 (2) 100...
question 2 and 3 could be answer is a complete question
Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following statement should be true? Statement (I): The concentration of fluoride ion F will decrease. Statement (Il): The pH of the buffer will decrease. Statement (IIl): The concentration of H30* will decrease. a) (0) b) (l) c) (IlI) d)(0) and () e) (0) and (II) f...
if you can't answer all ,please don't answer
1) of the reactions below, which one is a decomposition reaction? A) Ca(NO3)2 + Na2S -- CdS +2NaNO3 B) NH4Cl- NH3 + HCI C) 2Mg + 02 - 2MgO D) 2N2 + 3H2 → 2NH3 E) 2CH4 + 402 - 2002 + 4H20 miches of - x 1? 2 2) Calculate the percentage by mass of ammonia in cisplatin, PtCl2/NH3 12. A) 12.53 B) 5.68 C) 18.09 D) 11.35 E) 4.67 3)...
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