Limestone stalactites and Stalagmites are formed in caves through the following reaction: Ca2+ (aq) + 2...
Limestone stalactites and Stalagmites are formed in caves through the following reaction:
Ca2+ (aq) + 2 HCO3- (aq) ⟶ CaCO3 (s) + H2O (l) + CO2 (g)
When 1 mol of CaCO3 (s) forms under standard conditions, it performs 2.48 kJ of work to the surroundings, pushing back the atmosphere as CO2 forms. At the same time, 36.47 kJ of heat is absorbed from the environment. How much did the internal energy of the reaction change during this process? Consider the reaction as the system. Include proper sign.
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Limestone stalactites and Stalagmites are formed in caves
through the following reaction:
Ca2+ (aq) + 2...
Consider the following equilibrium reaction: CaCO3 (s) + CO2 (g) + H2O (l) ⇌ 2 HCO3- (aq)...
Consider the following equilibrium reaction: CaCO3 (s) + CO2 (g) + H2O (l) ⇌ 2 HCO3- (aq) + Ca2+ (aq) Which of these species should be included in the equilibrium constant expression (K) for this reaction? Select all that apply A.) Ca2+ (aq) B.) CaCO3 (s) C.) H2O (l) D.) CO2 (g) E.) HCO3- (aq)
Acid precipitation dripping on limestone produces carbon dioxide by the following reaction: CaCO3(s) + 2H+ (aq)...
Acid precipitation dripping on limestone produces carbon dioxide by the following reaction: CaCO3(s) + 2H+ (aq) —— Ca2+ (aq) + CO2(g) +H20(1) 17.0 mL of CO2 was produced at 25.0°C and768.0 mm Hg. Part 1 (1 pt) W See Periodic Table D See Hint How many moles of CO2 were produced? 78.6 mol Part 2 (1 pt) D See Hint How many milligrams of CaCO3 were consumed? 7.86 mg
2) Write the equilibrium constant expressions for each of the following reactions. (For gas-phase reactions, write...
2) Write the equilibrium constant expressions for each of the following reactions. (For gas-phase reactions, write the Ke expression.) a) 2 NO(g) + O2(g) = 2 NO2(g) b) 4 Ag(s) + O2(g) + 2 Ag2O(S) c) CaCO3(s) + CO2(aq) + H2O(l) = Ca2+(aq) + 2 HCO3(aq) 3) a) Write the K, expressions for reactions a and b in problem 2. b) If the value of K for reaction a in problem 2 is 2.8 x 1011 at 200°C, what is...
Pre-lab Study Questions 1. Calculate the enthalpy of reaction DHrxno for each of the following reactions using the t...
Pre-lab Study Questions 1. Calculate the enthalpy of reaction DHrxno for each of the following reactions using the tabulated standard enthalpy of formation DHfo. (Show calculation) a. H2O(g) ® H2O(l) b. CaCO3(s) ® CaO(s) + CO2(g) c. CH4(g) + 2 O2(g) ® CO2(g) + 2 H2O(g) 2. Consider the following reaction and the given standard enthalpy of formation DHfo. NH4NO3(s) ® NH4+(aq) + NO3-(aq) DHfo (kJ/mol) -365.6 -132.0 -205.0 a. Calculate the enthalpy of reaction DHrxno for the above reaction...
1)A voltaic cell operates at 298 K according to the following reaction: 4 Fe2+(aq) + O2...
1)A voltaic cell operates at 298 K according to the following reaction: 4 Fe2+(aq) + O2 (g) + 4 H+(aq) → 4 Fe3+ (aq) + 2 H2O (l) What is the emf of this cell when [Fe2+] = 6.5908E-4 M, [Fe3+] = 0.699 M, pressure O2 = 0.540 atm and pH = 3.10? 2)A voltaic cell operates at 298 K according to the following reaction: 3 Fe2+(aq) → Fe (s) + 2 Fe3+ (aq) What is the emf of this...
What is the general class of each test reaction in the introduction? Precipitation? Acid-Base? Oxidation eduction?...
What is the general class of each test reaction in the introduction? Precipitation? Acid-Base? Oxidation eduction? anoina to aizy ona svidstils Reaction Class 1 2 iliw 15 TO15192do art sshommua bns nosgol rond dass 101 12575 gbubnium oY noi de lo enor Som 10 910 w II woy Xd on abian aningstid on naloga uzib 3 OOH 4 5 DHET 6 7 SET adus 00 9 Complex ion formation 10 11 No reaction 12 13 14 Combination 15 16 17...
Acid precipitation dripping on limestone produces carbon dioxide by the following reaction: CaCO3(s) + 2H+ (aq) —— Ca2+ (aq) + CO2(g) +H20(1) 17.0 mL of CO2 was produced at 25.0°C and768.0 mm Hg. Part 1 (1 pt) W See Periodic Table D See Hint How many moles of CO2 were produced? 78.6 mol Part 2 (1 pt) D See Hint How many milligrams of CaCO3 were consumed? 7.86 mg
2) Write the equilibrium constant expressions for each of the following reactions. (For gas-phase reactions, write the Ke expression.) a) 2 NO(g) + O2(g) = 2 NO2(g) b) 4 Ag(s) + O2(g) + 2 Ag2O(S) c) CaCO3(s) + CO2(aq) + H2O(l) = Ca2+(aq) + 2 HCO3(aq) 3) a) Write the K, expressions for reactions a and b in problem 2. b) If the value of K for reaction a in problem 2 is 2.8 x 1011 at 200°C, what is...
What is the general class of each test reaction in the introduction? Precipitation? Acid-Base? Oxidation eduction? anoina to aizy ona svidstils Reaction Class 1 2 iliw 15 TO15192do art sshommua bns nosgol rond dass 101 12575 gbubnium oY noi de lo enor Som 10 910 w II woy Xd on abian aningstid on naloga uzib 3 OOH 4 5 DHET 6 7 SET adus 00 9 Complex ion formation 10 11 No reaction 12 13 14 Combination 15 16 17...
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