PROBLEM-1(UG and G Students): for a water which contains: 10-3 M (NH4)2CO3 5 × 10-3 M...
PROBLEM-1(UG and G Students): for a water which contains:
10-3 M (NH4)2CO3
5 × 10-3 M (NH4)3PO4
10-3 M CaCO3
Write all relevant chemical reactions and corresponding equilibrium constant equations
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PROBLEM-1(UG and G Students): for a water which contains:
10-3 M (NH4)2CO3
5 × 10-3 M...
Balance the following equations and determine which type of reaction is occurring. 1. (NH4)2CO3 (s) →NH3+H2O+CO2...
Balance the following equations and determine which type of reaction is occurring. 1. (NH4)2CO3 (s) →NH3+H2O+CO2 (g) 2. Zn (s) +H3C6H5O7 (aq) →Zn3(C6H5O7)2 (aq) + H2 (g) 3. Zn(C2H3O2)2 (aq) + Na3PO4 (aq) → NaC2H3O2 (aq) + Zn3(PO4)2 (s)
Balance the followiing equations and determine which type of reaction is occurring. 1._(NH4)2CO3 ()->NH3+H2O+CO2...
Balance the followiing equations and determine which type of reaction is occurring. 1._(NH4)2CO3 ()->NH3+H2O+CO2 (9) 2. Zn(s) +H3CeHsO7 (ag)-Zn3(CeH 5O7)2 (a) + H2 (g) 3. Zn(C2H3O2)2 (ac)+ Na3PO4 (aa) NaC2H3O2 (a) Zn3(PO4)2 (s)
MISC0477: Writing and Balancing Chemical Equations 229 Problem Set 3 mplete the following table by writing...
MISC0477: Writing and Balancing Chemical Equations 229 Problem Set 3 mplete the following table by writing the formulas of the ions, and the number of each, into which 1 mol of each of the listed ionic compounds would dissociate when dissolved in water cation anion compound formula or symbol number moles formula or symbol number of moles 1. KNO 2. NH NO3 3. BaCl2 4. Ca(CIO2 5. (NH4)2CO3 6. AlBrs 7. Alpo,
(1 point) Consider two interconnected tanks as shown in the figure above. Tank 1 initial contains 10 L (liters) of water and 355 g of salt, while tank 2 initially contains 90 L of water and 345 g of...
(1 point) Consider two interconnected tanks as shown in the figure above. Tank 1 initial contains 10 L (liters) of water and 355 g of salt, while tank 2 initially contains 90 L of water and 345 g of salt. Water containing 40 g/L of salt is poured into tank1 at a rate of 4 L/min while the mixture flowing into tank 2 contains a salt concentration of 20 g/L of salt and is flowing at the rate of 1...
Problem 5: A 95-g aluminum calorimeter contains 241 g of water. The aluminum and water are...
Problem 5: A 95-g aluminum calorimeter contains 241 g of water. The aluminum and water are initially in thermal equilibrium at a temperature of 9.3°C. Two solid objects are then placed in the water. One is a 50.3-g piece of copper with a specific heat of 390 J/(kg:°C) and an initial temperature of 81.2°C. The other is of unknown material with a mass of 69 g and an initial temperature of 100°C. The entire system reaches thermal equilibrium at a...
Problem 4: (Robot strength scaling effects) - all students, G-15 pts- UG 25 pts 1) Consider...
Problem 4: (Robot strength scaling effects) - all students, G-15 pts- UG 25 pts 1) Consider a four legged "microrobot" consisting of a cubic body, and four single dimensional "legs" arranged in the corners as shown in Figure 1. Assume that the legs are passive, e.g. they flex to support the weight of the robot (Figure 1 shows the robot at the moment it is placed on the ground). Assume that the dimensions of the legs and body are proportional,...
1a.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50...
1a.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50 mg/L Ca+ as CaCO3 were measured. pH was near neutral. What is alkalinity? _____ mg/L as CaCO3 1b.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50 mg/L Ca+ as CaCO3 were measured. pH was near neutral. What is alkalinity? _____ mg/L as CaCO3 1c.) Calculate Ksp = _____ A2BO3 ->2A++ BO32- Molar concentration of A+ = Molar...
Write the expressions for Kp for the following reactions: 1. a) 2NH3(g) + Co2(g) N2CH40(s) +...
Write the expressions for Kp for the following reactions: 1. a) 2NH3(g) + Co2(g) N2CH40(s) + H20 (I) b) CuO (s) + H2(g) Cu(l)+H20 (g) 2. At room temperature, a 1.5 L flask contains 3.0 moles of Cl, 0.5 mole of NOCI, and 4.0x10 mole of NO. Calculate Ke at this temperature for the following reaction: 2NO (g) + Cl2(g) 2NOCİ (g) 0.00245 M, does this represent a system at M, [No] 0.2 M and [Ch] If [NOCI] 2.0x 10...
1. A 40.0 mL sample of 0.205 M NH3(aq) is titrated with 0.250 M HBr(aq) at...
1. A 40.0 mL sample of 0.205 M NH3(aq) is titrated with 0.250 M HBr(aq) at 25 oC. The pKb for NH3 is 4.74 at 25 oC. (a) (4 Marks) Using all correct symbols and arrows, write the complete balanced chemical equation and net ionic equation for the neutralization reaction upon which this titration is based. (b) (4 Marks) What is the pH of the initial solution of NH3(aq)? Write the appropriate balanced equilibrium reaction that governs the pH of...
5. Which of the following species is amphiprotic in aqueous solution? (a) CH3NH2 c) NH4 (e)...
5. Which of the following species is amphiprotic in aqueous solution? (a) CH3NH2 c) NH4 (e) HSO (d) F (b) Н:0" 6, Use Table 15.2 (page 529) to decide whether the species on the left or those on the right are favored by the reaction. a. NH4 (aq) + H2PO4" (aq) # NH3(aq) + HsPO b. HCN (aq) + HS(aq) CN" (aq) +H2S c. HCO +OH CO2 H2S d. Al(H20)6 3+ +OH = Al(H20) s2+ OH 7. The equilibrium constant...
Balance the followiing equations and determine which type of reaction is occurring. 1._(NH4)2CO3 ()->NH3+H2O+CO2 (9) 2. Zn(s) +H3CeHsO7 (ag)-Zn3(CeH 5O7)2 (a) + H2 (g) 3. Zn(C2H3O2)2 (ac)+ Na3PO4 (aa) NaC2H3O2 (a) Zn3(PO4)2 (s)
MISC0477: Writing and Balancing Chemical Equations 229 Problem Set 3 mplete the following table by writing the formulas of the ions, and the number of each, into which 1 mol of each of the listed ionic compounds would dissociate when dissolved in water cation anion compound formula or symbol number moles formula or symbol number of moles 1. KNO 2. NH NO3 3. BaCl2 4. Ca(CIO2 5. (NH4)2CO3 6. AlBrs 7. Alpo,
(1 point) Consider two interconnected tanks as shown in the figure above. Tank 1 initial contains 10 L (liters) of water and 355 g of salt, while tank 2 initially contains 90 L of water and 345 g of salt. Water containing 40 g/L of salt is poured into tank1 at a rate of 4 L/min while the mixture flowing into tank 2 contains a salt concentration of 20 g/L of salt and is flowing at the rate of 1...
Problem 5: A 95-g aluminum calorimeter contains 241 g of water. The aluminum and water are initially in thermal equilibrium at a temperature of 9.3°C. Two solid objects are then placed in the water. One is a 50.3-g piece of copper with a specific heat of 390 J/(kg:°C) and an initial temperature of 81.2°C. The other is of unknown material with a mass of 69 g and an initial temperature of 100°C. The entire system reaches thermal equilibrium at a...
Problem 4: (Robot strength scaling effects) - all students, G-15 pts- UG 25 pts 1) Consider a four legged "microrobot" consisting of a cubic body, and four single dimensional "legs" arranged in the corners as shown in Figure 1. Assume that the legs are passive, e.g. they flex to support the weight of the robot (Figure 1 shows the robot at the moment it is placed on the ground). Assume that the dimensions of the legs and body are proportional,...
Write the expressions for Kp for the following reactions: 1. a) 2NH3(g) + Co2(g) N2CH40(s) + H20 (I) b) CuO (s) + H2(g) Cu(l)+H20 (g) 2. At room temperature, a 1.5 L flask contains 3.0 moles of Cl, 0.5 mole of NOCI, and 4.0x10 mole of NO. Calculate Ke at this temperature for the following reaction: 2NO (g) + Cl2(g) 2NOCİ (g) 0.00245 M, does this represent a system at M, [No] 0.2 M and [Ch] If [NOCI] 2.0x 10...
5. Which of the following species is amphiprotic in aqueous solution? (a) CH3NH2 c) NH4 (e) HSO (d) F (b) Н:0" 6, Use Table 15.2 (page 529) to decide whether the species on the left or those on the right are favored by the reaction. a. NH4 (aq) + H2PO4" (aq) # NH3(aq) + HsPO b. HCN (aq) + HS(aq) CN" (aq) +H2S c. HCO +OH CO2 H2S d. Al(H20)6 3+ +OH = Al(H20) s2+ OH 7. The equilibrium constant...
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