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2H20の←→ H,O"(aq) + OH(aq) K.-1 x 10-14 CH as an intoxikcant (streetHO name: G, Lquidx, Home Bov)...
Part A Consider the reaction 10, (aq) + 2H20 (1) H.10, (ag): K. - 3.5 x...
Part A Consider the reaction 10, (aq) + 2H20 (1) H.10, (ag): K. - 3.5 x 10-9 If you start with 23.0 mL of a 0.903 M solution of Nalo, and then dilute it with water to 500.0 mL, what is the concentration of H, 10, at equilibrium? Express your answer to two significant figures and include the appropriate units. A ? Value Units Submit Request Answer Provide Feedback
Q. #1. The equilibrium constant for the auto-ionization of water 2H,0 (1) = H,0 (aq) + OH (aq) is 1.0 x 10" at 25°C...
Q. #1. The equilibrium constant for the auto-ionization of water 2H,0 (1) = H,0 (aq) + OH (aq) is 1.0 x 10" at 25°C and 3.8 x 10" at 40°C. Is the forward process endothermic or exothermic? Need to show your calculation. Ans: exothermic
7. The equilibrium constant for the auto-ionization of water HO () (aq)OH (aq) is 1.0x 10 at 25°C and 3.8 x 10 at 4...
7. The equilibrium constant for the auto-ionization of water HO () (aq)OH (aq) is 1.0x 10 at 25°C and 3.8 x 10 at 40C. a. Is the forward process endothermic or exothermic? b. What is the pH of the water at 40 C? c. Based on your calculated pH, is this solution acidic or basic? d. Which of the following statements is consistent with this behavior? i. The autoionization of water is an endothermic reaction i. The autoionization of water...
1) Determine the Kb for CN at 25°C The K, for HCN is 49. 10-10 A) 3.7 10-7 B) 23 , 10-9 14 x 10-5 D) 49 10-14 E) 20...
1) Determine the Kb for CN at 25°C The K, for HCN is 49. 10-10 A) 3.7 10-7 B) 23 , 10-9 14 x 10-5 D) 49 10-14 E) 20 - 10-5 2 ) 2) Calculate the solubility (in g/L) of calcium fluoride in water at 25°C if the Ksp for Ca F2 is 1.52 10-10 A) 96 10-4 gł B ) 26 x 10-2 g/L. C) 4.1 10-2 g/L D) 3.3 * 10-2 g/l 3) in the reaction C&HCl(aq)...
1. The initial concentrations of reactants and products for this reaction are given below. N2(g) +...
1. The initial concentrations of reactants and products for this reaction are given below. N2(g) + O2(g) ⇄ 2NO(g) Calculate Q for this reaction. Answer this to one decimal place (e.g. 10.2) The initial concentration of N2 is 1.0 M The initial concentration of O2 is 1.0 M The initial concentration of NO is 2.5 M 2. The reaction below is not at equilibria and Q = 1.7. The equilibrium constant is K = 0.230. 2SO3(g) ⇌ 2SO2(g) + O2(g)...
19. Calculate the rate of flow of O, (g) through the walls of a porous tube if H, (g) flows at the rate of 3.95 x 10...
19. Calculate the rate of flow of O, (g) through the walls of a porous tube if H, (g) flows at the rate of 3.95 x 10 mL/sec under identical conditions. 20. Acetylene gas reacts with oxygen gas as follows: 2 C,H, (B)+5 0, (8) 4 CO, (B) +2 H,0 (g) What quantity of CO, (g) is formed when 6.0 L of acetylene gas is completely combusted? 21. How many liters of O,(g) at STP are evolved when 3.25 g...
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)...
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...
It's a weak acid strong base titration Experiment 4: Identification of an unknown acid by titration...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH solution would react completely with 25.8 ml. of 0.198 M HCl according to the following cquation? HCI+KOH --->KCI+H.O a) 86.4 ml. b) 25.7 ml. c) 38.7 ml d) 17.2 ml. 2. Which one of the following is a strong soluble base? a) Ni(OH): b) Mg(OH): c) RLOH d) ChOH) c) Fe(OH) 3. Which one of the following is a strong acid? a) HF b)...
Part A Consider the reaction 10, (aq) + 2H20 (1) H.10, (ag): K. - 3.5 x 10-9 If you start with 23.0 mL of a 0.903 M solution of Nalo, and then dilute it with water to 500.0 mL, what is the concentration of H, 10, at equilibrium? Express your answer to two significant figures and include the appropriate units. A ? Value Units Submit Request Answer Provide Feedback
Q. #1. The equilibrium constant for the auto-ionization of water 2H,0 (1) = H,0 (aq) + OH (aq) is 1.0 x 10" at 25°C and 3.8 x 10" at 40°C. Is the forward process endothermic or exothermic? Need to show your calculation. Ans: exothermic
7. The equilibrium constant for the auto-ionization of water HO () (aq)OH (aq) is 1.0x 10 at 25°C and 3.8 x 10 at 40C. a. Is the forward process endothermic or exothermic? b. What is the pH of the water at 40 C? c. Based on your calculated pH, is this solution acidic or basic? d. Which of the following statements is consistent with this behavior? i. The autoionization of water is an endothermic reaction i. The autoionization of water...
1) Determine the Kb for CN at 25°C The K, for HCN is 49. 10-10 A) 3.7 10-7 B) 23 , 10-9 14 x 10-5 D) 49 10-14 E) 20 - 10-5 2 ) 2) Calculate the solubility (in g/L) of calcium fluoride in water at 25°C if the Ksp for Ca F2 is 1.52 10-10 A) 96 10-4 gł B ) 26 x 10-2 g/L. C) 4.1 10-2 g/L D) 3.3 * 10-2 g/l 3) in the reaction C&HCl(aq)...
19. Calculate the rate of flow of O, (g) through the walls of a porous tube if H, (g) flows at the rate of 3.95 x 10 mL/sec under identical conditions. 20. Acetylene gas reacts with oxygen gas as follows: 2 C,H, (B)+5 0, (8) 4 CO, (B) +2 H,0 (g) What quantity of CO, (g) is formed when 6.0 L of acetylene gas is completely combusted? 21. How many liters of O,(g) at STP are evolved when 3.25 g...
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)...
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...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH solution would react completely with 25.8 ml. of 0.198 M HCl according to the following cquation? HCI+KOH --->KCI+H.O a) 86.4 ml. b) 25.7 ml. c) 38.7 ml d) 17.2 ml. 2. Which one of the following is a strong soluble base? a) Ni(OH): b) Mg(OH): c) RLOH d) ChOH) c) Fe(OH) 3. Which one of the following is a strong acid? a) HF b)...
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