Chemistry concepts and calculations

2CH3CH2CH2OH+9O2 --> 6CO2+8H2O Based on the standard free energies of formation

2CH3CH2CH2OH+9O2 --> 6CO2+8H2O Based on the standard free energies of formation given in the table below, what is the standard free energy change for this reaction? 2CH3CH2CH2O…

2CH3OH(g) yields 2CH4(g) + 02(g) deltaH = +252.8kJ A) Calculate the amount of he

2CH3OH(g) yields 2CH4(g) + 02(g) deltaH = +252.8kJ A) Calculate the amount of heat transferred when 27.0g of CH3OH(g) is decomposed by this reaction at constant pressure. B) For a…

2CH3OH(g) yields 2CH4(g) + 02(g) deltaH = +252.8kJ A) Calculate the amount of he

2CH3OH(g) yields 2CH4(g) + 02(g) deltaH = +252.8kJ A) Calculate the amount of heat transferred when 27.0g of CH3OH(g) is decomposed by this reaction at constant pressure. B) For a…

2CO (g) + 2NO (g) ------- N 2(g) + 2CO 2(g) A. What is the volum ratio of carbon

2CO(g) + 2NO(g)   -------    N2(g) + 2CO2(g) A. What is the volum ratio of carbon Monoxide to carbondioxide in the balance equation? B. If 42.7 g of CO is reacted completely at ST…

2ClO_2(g) + F_2(g) rightarrow 2CIO_2F(g) The following results were obtained whe

2ClO_2(g) + F_2(g) rightarrow 2CIO_2F(g) The following results were obtained when the reaction represented above was studied at 25 degree C Write the rate law expression for the r…

2Fe 2 O 3 (s) + 3C (s) –––> 4Fe (s) + 3CO 2 (g) H (KJ/mol) S (J/molK) (A) Calcul

2Fe2O3 (s) + 3C (s) –––> 4Fe (s) + 3CO2 (g) H (KJ/mol) S (J/molK) (A) Calculate G° for this reaction (B) How many electrons are transferred in the balanced reaction above? (C) …

2Fe(NH 4 ) 2 (SO 4 ) 2 .6H 2 O+ 6K 2 C 2 O 4 +H 2 O 2 +H 2 SO 4 --------2K 3 [Fe

2Fe(NH4)2(SO4)2.6H2O+ 6K2C2O4+H2O2+H2SO4 --------2K3[Fe(C2O4)3].3H2O+3K2SO4+2(NH4)2SO4+8H2O What is the oxidizing/reducing agent that is changing theoxidation state of the iron? 2…

2Fe(s) +3H2SO4(aq) Fe2(SO4)3(aq) +3H2(g) How many moles of hydrogen gas can be p

2Fe(s) +3H2SO4(aq) Fe2(SO4)3(aq) +3H2(g) How many moles of hydrogen gas can be produced from 30.0 g of iron? When 10.3 g of iron are reacted with 14.8 moles of sulfuric acid, what…

2Fe2O3(s)+3 CO2(g)+4 Fe(s) A) if 2.70 g of Fe2O and 4.05 of carbon react, what m

2Fe2O3(s)+3 CO2(g)+4 Fe(s) A) if 2.70 g of Fe2O and 4.05 of carbon react, what mass of iron is expected to form? B) what was the limiting reactant? C) How much excess reagent (in …

2H 2 S (g) = 2H 2 (g) + S 2 (g) When heated hydrogen sulfide gas decomposes acco

2H2S (g) = 2H2 (g) + S2 (g) When heated hydrogen sulfide gas decomposes according to the equation above. A 3.40g smple of H2S(g) is introduced into an evacuated rigid 1.25 L conta…

2H 2 S (g) = 2H 2 (g) + S 2 (g) When heated hydrogen sulfide gas decomposes acco

2H2S (g) = 2H2 (g) + S2 (g) When heated hydrogen sulfide gas decomposes according to the equation above. A 3.40g smple of H2S(g) is introduced into an evacuated rigid 1.25 L conta…

2H+(aq)+Fe(s)H2(g)+Fe2+(aq) 1. Indicate the half-reaction occurring at Anode. Ex

2H+(aq)+Fe(s)H2(g)+Fe2+(aq) 1. Indicate the half-reaction occurring at Anode. Express your answer as a chemical equation. Identify all of the phases in your answer. 2. Indicate th…

2H2 (g) + O2 (g) -->

2H2 (g) + O2 (g) --> <-- 2 H2O (g) highly exothermic What will happen to the equilibrium (to the relative amounts of reactants and products shift left, right, or no shift ) …

2H2 (g)+O2(g)2H2O(1) Hsystem--483kJ Part B-Predicting the entropy change for the

2H2 (g)+O2(g)2H2O(1) Hsystem--483kJ Part B-Predicting the entropy change for the system, 5,ystem, from the balanced equation Positive Predicting the entropy change for the system,…

2H2S (g) + SO2 (g) ?? 3S (s) + 2H2O (g) ?H Solution 2 H2S(g) + 3 O2(g) ---> 2 SO

2H2S (g) + SO2 (g) ?? 3S (s) + 2H2O (g) ?H

2H2S (g) + SO2 (g) ?? 3S (s) + 2H2O (g) ?H Solution 2 H2S(g) + 3 O2(g) ---> 2 SO

2H2S (g) + SO2 (g) ?? 3S (s) + 2H2O (g) ?H

2H2S (g) + SO2 (g)--> 3S (s) + 2H2O (g) the facility is shown in Figure 1 on pag

2H2S (g) + SO2 (g)--> 3S (s) + 2H2O (g) the facility is shown in Figure 1 on page 2. Due to the difficulty (and cost) of achieving high purity, the input streams (F1 and F2) bo…

2HBr + H2S04-? H2O + Br2 + SO2 Br2 can produce an orange vapor. If F is present,

2HBr + H2S04-? H2O + Br2 + SO2 Br2 can produce an orange vapor. If F is present, the following reactions will occur. Nal + H,S04-NaHSO, t HI 2HI + H2so,-? H2O + I2 + so, 12 will g…

2HI (g) H_2(g) I_2(g) The above reaction is at equilibrium in a 4.2 liter vessel

2HI (g) H_2(g) I_2(g) The above reaction is at equilibrium in a 4.2 liter vessel with a compressible lid. I place a 380 pound gorilla on the lid of this reaction vessel, decreasin…

2HI(g) + Br2(g) -----> (equilibrium) 2HBr(g) + I2(s) If [HBr] increases than [I2

2HI(g) + Br2(g) -----> (equilibrium) 2HBr(g) + I2(s) If [HBr] increases than [I2]: increases,decreases or no change, if Br2 is removed than [HI]: increases, decreases or no cha…

2HI(g) + Cl2(g) 2HCl(g) + I2(s) This is all the information presented to so

2HI(g) + Cl2(g) <==> 2HCl(g) + I2(s) This is all the information presented to solve the equation. The steps i've taken are as follows: 2mol HI, 1mol Cl2 <==> 2mol HCl,…

2HI(g) + Cl2(g) 2HCl(g) + I2(s) This is all the information presented to so

2HI(g) + Cl2(g) <==> 2HCl(g) + I2(s) This is all the information presented to solve the equation. The steps i've taken are as follows: 2mol HI, 1mol Cl2 <==> 2mol HCl,…

2H^+(aq) + Fe(s) rightarrow H_2(g) + Fe^2+ (aq) Pt(s)|H_2(g)|H^+ (aq)||Fe^2+ (aq

2H^+(aq) + Fe(s) rightarrow H_2(g) + Fe^2+ (aq) Pt(s)|H_2(g)|H^+ (aq)||Fe^2+ (aq)|Fe(s) Fe^2+ (aq)|Fe(s)||H_2(g)|H^+ (aq)|Pt(s) Pt(s)|H^+ (aq)|H_2(g)||Fe(s)|Fe^2+ (aq) Fe(s)|Fe^2+…

2Hg2+ + 2e- Hg2 2+ E (volts) = +0.91 Co2+ + 2e- Co. E( volts) =

2Hg2+ + 2e- <-----> Hg2 2+      E (volts) = +0.91 Co2+   + 2e- <-----> Co.             E( volts) = -0.28 a)    Determine the cell voltage of a voliatic cell containing…

2HgCh2+ C2042- 2C1-+2c02 Hg22 (overall reaction) ] not the rate law for the foll

2HgCh2+ C2042- 2C1-+2c02 Hg22 (overall reaction) ] not the rate law for the following mechanism? HgCl2+ C2042- HgC2C2042- Hg HgCl2 -Hg2Cl2 2C204C12- C2042-+2CI-+2CO2 A) The rate l…

2HgCl2(aq) + C2O42–(aq) 2Cl–(aq) +2CO2(g) + Hg2Cl2(s) The above reaction was stu

2HgCl2(aq) + C2O42–(aq) 2Cl–(aq) +2CO2(g) + Hg2Cl2(s) The above reaction was studied by the method of initial rates and the following results were obtained: [HgCl2] (M) [C2O42–] (…

2I Online teaching and learning resource from Cengage Google Chrome nt/takeCoval

2I Online teaching and learning resource from Cengage Google Chrome nt/takeCovalentActivity.do locator-assignment-take&takeAssignment; essionl.ocatore assignment-ta Use the Re…

2I- (aq) + S2O82- (aq) ? I2 (aq) + 2SO42- (aq) The following rate data was colle

2I- (aq) + S2O82- (aq) ? I2 (aq) + 2SO42- (aq) The following rate data was collected by measuring the time required for the appearance of the blue color due to the iodine-starch c…

2I- (aq) + S2O82- (aq) ? I2 (aq) + 2SO42- (aq) The following rate data was colle

2I- (aq) + S2O82- (aq) ? I2 (aq) + 2SO42- (aq) The following rate data was collected by measuring the time required for the appearance of the blue color due to the iodine-starch c…

2Is wcC Fa11 2037 6. What quantity of energy would be 234.0409 annu (3.886 x 10-

2Is wcC Fa11 2037 6. What quantity of energy would be 234.0409 annu (3.886 x 10-22 g produced as one atom of plutonium-238 undergoes alpha decay? amu (3.953 x 10g) and the nuclide…

2KClO4(s) 2 KClO3(s) + O2(g) Delta S degree rxn = J/K Delta S degree surr = J/K

2KClO4(s) 2 KClO3(s) + O2(g) Delta S degree rxn = J/K Delta S degree surr = J/K Is the reaction spontaneous at 25 degree C? yes no 2Na(s) + 2H2O(l) rightarrow 2NaOH(aq) + H2(g) De…

2KClO4(s) 2 KClO3(s) + O2(g) Delta S degree rxn = J/K Delta S degree surr = J/K

2KClO4(s) 2 KClO3(s) + O2(g) Delta S degree rxn = J/K Delta S degree surr = J/K Is the reaction spontaneous at 25 degree C? yes no 2Na(s) + 2H2O(l) rightarrow 2NaOH(aq) + H2(g) De…

2KI(aq) + Pb(NO 3 ) 2 (aq) -->PbI 2 (s) + 2KNO 3 (aq) 1.Calculate the mass in g

2KI(aq) + Pb(NO3)2(aq) -->PbI2(s) + 2KNO3(aq) 1.Calculate the mass in g of the PbI2(s)(yellowprecipitate) that is formed after reacting with 1mL of 0.1M KI solution + 1mL of 0.…

2Mg+O 2 ---2MgO,rate=k[Mg][O 2 ] 2 What is the overall reaction order? What are

2Mg+O2---2MgO,rate=k[Mg][O2]2 What is the overall reaction order? What are the units of the rate constant k for thisreaction?What would happen to the rate if [M] were doubled? Wha…

2NH 3 (g)-N2(g) + 3H 2 (g) Go = 34H Now suppose a reaction vessel is filled with

2NH 3 (g)-N2(g) + 3H 2 (g) Go = 34H Now suppose a reaction vessel is filled with 0.127 atm of ammonia (NH,) and 0.120 atm of hydrogen (H2) at 500. °C. Answer the ollowing question…

2NH3 —> N2 (g) + 3H2 (g) If the total pressure of the gas at the end if the reac

2NH3 —> N2 (g) + 3H2 (g) If the total pressure of the gas at the end if the reaction is 759 mmHg, calculate the partial pressures in atm of nitrogen(N2) and hydrogen (H2) Pleas…

2NH3(g) +3O2(g) +2CH4(g) 2HCN(g) + 6H2O(g)2NH3(g) +3O2(g) +2CH4(g) 2HCN(g) + 6H2

2NH3(g) +3O2(g) +2CH4(g) 2HCN(g) + 6H2O(g)2NH3(g) +3O2(g) +2CH4(g) 2HCN(g) + 6H2O(g) If 3.84 moles of methane are consumed in this reaction, how many moles of HCN will be produced…

2NO (g) + Cl_2 (g) rightwardsarrowoverleftwardsarrow 2NOCl (g) K_p = 1.4 times 1

2NO (g) + Cl_2 (g) rightwardsarrowoverleftwardsarrow 2NOCl (g) K_p = 1.4 times 10^5 Since K_p is large, the reaction goes close to completion. In such cases, first react to comple…

2NO (g) + O2(g)? 2NO2 (g) If 9.0 L of NO is combined with excess O2 at STP, what

2NO (g) + O2(g)? 2NO2 (g) If 9.0 L of NO is combined with excess O2 at STP, what is the volume in liter of the NO2 produced?

2NO + Br2 ----> 2NOBr This is second order NO and first order in Br2 Write the r

2NO + Br2 ----> 2NOBr This is second order NO and first order in Br2 Write the rate expression for the reaction. If the concentration of Br2 is tripled, how will the reactionra…

2NO 2 (g) N 2 O 4 (g) is anequilibrium reaction at 25 o C where K p = 8.77atm -1

2NO2(g) N2O4(g) is anequilibrium reaction at 25oC where Kp = 8.77atm-1. If the equilibrium partial pressure of NO2(g) is 0.282atm, what is the equilibrium partial pressure ofN2O4(…

2NO(g) + 2H 2 (g) --------->N 2 (g) + 2H 2 O(g) The Rate law for this reaction w

2NO(g) + 2H2(g) --------->N2(g) + 2H2O(g) The Rate law for this reaction when it isfirst order in H2 and second order in NO. Writethe rate law, and find the reaction rate. The …

2NO(g) + O2(g) yields 2NO2(g) If the rate expression for the above reaction is k

2NO(g) + O2(g) yields 2NO2(g) If the rate expression for the above reaction is k[NO]^2[O2], how much will he reaction speed increase if the concentration of NO is increased from e…

2NO(g) + O2(g) yields 2NO2(g) If the rate expression for the above reaction is k

2NO(g) + O2(g) yields 2NO2(g) If the rate expression for the above reaction is k[NO]^2[O2], how much will he reaction speed increase if the concentration of NO is increased from e…

2NO2(g) NO(g) + NO3(g) How will the changes listed affect the position o

2NO2(g) <-- --> NO(g) + NO3(g) How will the changes listed affect the position of the following equilibrium? 1) The concentration of NO is increased.      a.  There is no ch…

2NO2(g) N2O4(g) a) At a total pressure of 1 bar and T=298.15 K, the partial pres

2NO2(g) N2O4(g) a) At a total pressure of 1 bar and T=298.15 K, the partial pressure of NO2(g) and N2O4(g) in an equilibrium mixture of the two gases are found to be 0.3181 and 0.…

2NOBr 2NO + Br 2 H = +61.1 kJ which of the following statements are true? a) Add

2NOBr 2NO + Br2 H = +61.1 kJ which of the following statements are true? a) Adding more NO shifts reaction to the right b) Removing some NOBr shifts reaction to the left c) Increa…

2NOCI (g) 2NO (g)+C Now suppose a reaction vessel is filled with 9.08 atm of nit

2NOCI (g) 2NO (g)+C Now suppose a reaction vessel is filled with 9.08 atm of nitrosyl chloride (NOCI) and 7.72 atm of chlorine (CI2) at 254. °C. Answer the following questions abo…

2N_20_5= 4no_2+O_2 Rate = k[N_2O_5] k = 4.0 Times 10^-3 (1/s) at certain tempera

2N_20_5= 4no_2+O_2 Rate = k[N_2O_5] k = 4.0 Times 10^-3 (1/s) at certain temperature What is half life t_1/2 and how long does it take for N_2O_5 concentration io drop to 1/3 of i…

2Na 3 PO 4 (aq) + 3SrCl 2 (aq) Sr 3 (PO 4 ) 2 (s) + 6NaCl(aq) The concentration

2Na3PO4(aq) + 3SrCl2(aq) Sr3(PO4)2(s) + 6NaCl(aq) The concentration of SrCl2 is 0.744 M at the start of the reaction, and 0.647 M after 136 seconds. The initial concentrations of …