Homework Answers
1) Ba(ClO3)2(s) ----------> BaCl2 + 3O2(g) is a redox reaction as Cl undergoes reduction and O undergoes oxidation
2) 2NaCl(aq) + K2S(aq) --------> Na2S(aq) + 2KCl(aq) is an ion-exchange reaction
Hence the correct option is none of these
3) CaO(s) + CO2(g) ---------> CaCO3(s)
none of these
4) KOH(aq) + AgNO3(aq) ---------> AgOH(s) + KNO3 is a precipitation reaction as Ag precipitates as AgOH
5) Ba(OH)2 + 2HNO2 --------> Ba(NO2)2(aq) + 2H2O(l) is an acid base neutralisation reaction as salt and water are formed as products in this reaction
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Classify each of these reaction. Ba(ClO_3)_2(s) rightarrow BaCl_2(s) + 3O_2(g)
Indicate which of the following chemical reaction are redox reactions: a. 2Pbs + 3O_2 rightarrow 2PbO...
Indicate which of the following chemical reaction are redox reactions: a. 2Pbs + 3O_2 rightarrow 2PbO + 2SO_2 b. 2AgNO_3 + CuCl_2 rightarrow Cu(NO_3)_2 + 2AgCl c. CH_4 + 2O_2 rightarrow CO_2 + 2H_2 O d. FeCl_2 + 2NaOH rightarrow Fe(OH)_2 + 2NaCl e. 4Fe + 3O_2 rightarrow 2Fe_2 O_3
Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s) + 3O_2(g) rightarrow 2Al_2O_3(s)...
Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s) + 3O_2(g) rightarrow 2Al_2O_3(s) What volume of O_2 gas (in L), measured at 760 mmHg and 34 degree C is required to completely react with 52.2 g of Al?
Calculate the [OH^-], pOH and pH of a 0.232 M solution of Ba(OH)_2. Ba(OH)_2 (aq) rightarrow...
Calculate the [OH^-], pOH and pH of a 0.232 M solution of Ba(OH)_2. Ba(OH)_2 (aq) rightarrow Ba^2+ (aq) + 2 OH^-(aq)
Balance the following equation: _______ Ba_3(PO_4)_2 + _______ NaNO_3 rightarrow _______ Na_3PO_4 + _______ Ba(NO_3)_2 How...
Balance the following equation: _______ Ba_3(PO_4)_2 + _______ NaNO_3 rightarrow _______ Na_3PO_4 + _______ Ba(NO_3)_2 How many grams of both products can be made if 8.15 g of Ba_3(PO_4)_2 and 6.20 g of NaNO_3 are reacted (Dont forget about the limiting reagent.)
Consider the following reaction: Ca(s) + 2 H_2O(l) rightarrow Ca(OH)_2(s) + H_2(g) Calculate the heat of...
Consider the following reaction: Ca(s) + 2 H_2O(l) rightarrow Ca(OH)_2(s) + H_2(g) Calculate the heat of reaction based on the following information: 2H_2(g) + O_2(g) rightarrow 2 H_2O(l) DeltaH = -572 kJ/mol CaO(s) + H_2O(l) rightarrow Ca(OH)_2(s) DeltaH = -64 kJ/mol CaCO_3(s) rightarrow CaO(s) + CO_2(g) DeltaH = +178.1 kJ/mol 2 Ca (s) + O_2(g) rightarrow 2 CaO(s) DeltaH = -1270 kJ/mol 13. Acetylene is used in blow torches, and bums according to the following equation: 2 C_2H_2(g) + 5...
Consider the combustion of ethylene. C_2 H_4 (g) + 3O_2 (g) rightarrow 2CO_2 (g) + 2H_2...
Consider the combustion of ethylene. C_2 H_4 (g) + 3O_2 (g) rightarrow 2CO_2 (g) + 2H_2 O (g) If the concentration of C_2 H_4 is decreasing at the rate of 3.7 times 10^-3 M/s, what is the rate of change in the concentration of CO_2 ? Express the rate in molarity per second two significant digits. delta [CO_2]/delta t = M/s What is the rate of change in the concentration of H_2 O ? Express the rate in molarity per...
Consider the following redox reaction: Al(s) + Fe_2O_3 rightarrow Al_2O_3(s) + Fe(l) a. Determine the mass...
Consider the following redox reaction: Al(s) + Fe_2O_3 rightarrow Al_2O_3(s) + Fe(l) a. Determine the mass of Fe(l) that is produced when 500.0 g of aluminum reacts with an excess of iron (III) oxide b. Determine the mass of Fe(l) that is produced when 500.0 g of iron (III) oxide reacts with an excess of aluminum c. If 500.0 g Fe_2O_3 is allowed to react with 500.0 g Al, what is the limiting reactant? d. What is the theoretical yield...
A 3.1 -mol sample of KCIO_3 was decomposed according to the equation 2KCIO_3(s) rightarrow 2KCl(s) +...
A 3.1 -mol sample of KCIO_3 was decomposed according to the equation 2KCIO_3(s) rightarrow 2KCl(s) + 3O_2(g) How many moles of O_2 arc formed assuming 100% yield? a. 2.1 mol b. 2.6 mol c. 3.1 mol d. 1.6 mol (e) 4.7 mol The rusting of iron is represented by the equation 4Fe + 3O_2 2Fe_2O_3. If you have a 1.45-mol sample of iron, how many moles of Fe_2O_3 will there be after the iron has rusted completely? a. 0.483 mol...
The following series of reactions were carried out. PbCO_3(s) + 2HNO_3(aq) rightarrow Pb(NO_3)_2(aq) + H_2O(l) +...
The following series of reactions were carried out. PbCO_3(s) + 2HNO_3(aq) rightarrow Pb(NO_3)_2(aq) + H_2O(l) + CO_2(g) Pb(NO_3)_2(aq) + 2HCl(aq) rightarrow 2HNO_3(aq) + PbCl_2(s) If a student starts with 4.000 g of lead(II) carbonate for the first reaction and all other reagents are added in excess, what is the theoretical yield of lead(II) chloride solid? If the student isolates 3.571 g of lead(II) chloride, what is the percent yield?
What is the net ionic equation for the reaction pb(NO_3)_2 + 2KCL(aq) rightarrow PbCl_2(s) + 2KNO_3(aq)?...
What is the net ionic equation for the reaction pb(NO_3)_2 + 2KCL(aq) rightarrow PbCl_2(s) + 2KNO_3(aq)? (A) Pb^2-(aq) + 2NO_3(aq) + 2K^+(aq)+ 2Cl^+(aq) rightarrow PbCl_2(s) + 2K^+(aq) + 2NO^- _3(aq) (B) Pb^+(aq) + 2NO_3(aq) + 2KCl(aq) rightarrow PbCl_2(s) + 2K^+(aq) + 2NO^- _3(aq) (C) Pb^2+(aq) + 2Cl(aq)rightarrow PbCl_2(s) (D) K^+(aq) + NO^- _3(aq) rightarrow KNO_3(aq)
Indicate which of the following chemical reaction are redox reactions: a. 2Pbs + 3O_2 rightarrow 2PbO + 2SO_2 b. 2AgNO_3 + CuCl_2 rightarrow Cu(NO_3)_2 + 2AgCl c. CH_4 + 2O_2 rightarrow CO_2 + 2H_2 O d. FeCl_2 + 2NaOH rightarrow Fe(OH)_2 + 2NaCl e. 4Fe + 3O_2 rightarrow 2Fe_2 O_3
Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s) + 3O_2(g) rightarrow 2Al_2O_3(s) What volume of O_2 gas (in L), measured at 760 mmHg and 34 degree C is required to completely react with 52.2 g of Al?
Calculate the [OH^-], pOH and pH of a 0.232 M solution of Ba(OH)_2. Ba(OH)_2 (aq) rightarrow Ba^2+ (aq) + 2 OH^-(aq)
Balance the following equation: _______ Ba_3(PO_4)_2 + _______ NaNO_3 rightarrow _______ Na_3PO_4 + _______ Ba(NO_3)_2 How many grams of both products can be made if 8.15 g of Ba_3(PO_4)_2 and 6.20 g of NaNO_3 are reacted (Dont forget about the limiting reagent.)
Consider the following reaction: Ca(s) + 2 H_2O(l) rightarrow Ca(OH)_2(s) + H_2(g) Calculate the heat of reaction based on the following information: 2H_2(g) + O_2(g) rightarrow 2 H_2O(l) DeltaH = -572 kJ/mol CaO(s) + H_2O(l) rightarrow Ca(OH)_2(s) DeltaH = -64 kJ/mol CaCO_3(s) rightarrow CaO(s) + CO_2(g) DeltaH = +178.1 kJ/mol 2 Ca (s) + O_2(g) rightarrow 2 CaO(s) DeltaH = -1270 kJ/mol 13. Acetylene is used in blow torches, and bums according to the following equation: 2 C_2H_2(g) + 5...
Consider the combustion of ethylene. C_2 H_4 (g) + 3O_2 (g) rightarrow 2CO_2 (g) + 2H_2 O (g) If the concentration of C_2 H_4 is decreasing at the rate of 3.7 times 10^-3 M/s, what is the rate of change in the concentration of CO_2 ? Express the rate in molarity per second two significant digits. delta [CO_2]/delta t = M/s What is the rate of change in the concentration of H_2 O ? Express the rate in molarity per...
Consider the following redox reaction: Al(s) + Fe_2O_3 rightarrow Al_2O_3(s) + Fe(l) a. Determine the mass of Fe(l) that is produced when 500.0 g of aluminum reacts with an excess of iron (III) oxide b. Determine the mass of Fe(l) that is produced when 500.0 g of iron (III) oxide reacts with an excess of aluminum c. If 500.0 g Fe_2O_3 is allowed to react with 500.0 g Al, what is the limiting reactant? d. What is the theoretical yield...
A 3.1 -mol sample of KCIO_3 was decomposed according to the equation 2KCIO_3(s) rightarrow 2KCl(s) + 3O_2(g) How many moles of O_2 arc formed assuming 100% yield? a. 2.1 mol b. 2.6 mol c. 3.1 mol d. 1.6 mol (e) 4.7 mol The rusting of iron is represented by the equation 4Fe + 3O_2 2Fe_2O_3. If you have a 1.45-mol sample of iron, how many moles of Fe_2O_3 will there be after the iron has rusted completely? a. 0.483 mol...
The following series of reactions were carried out. PbCO_3(s) + 2HNO_3(aq) rightarrow Pb(NO_3)_2(aq) + H_2O(l) + CO_2(g) Pb(NO_3)_2(aq) + 2HCl(aq) rightarrow 2HNO_3(aq) + PbCl_2(s) If a student starts with 4.000 g of lead(II) carbonate for the first reaction and all other reagents are added in excess, what is the theoretical yield of lead(II) chloride solid? If the student isolates 3.571 g of lead(II) chloride, what is the percent yield?
What is the net ionic equation for the reaction pb(NO_3)_2 + 2KCL(aq) rightarrow PbCl_2(s) + 2KNO_3(aq)? (A) Pb^2-(aq) + 2NO_3(aq) + 2K^+(aq)+ 2Cl^+(aq) rightarrow PbCl_2(s) + 2K^+(aq) + 2NO^- _3(aq) (B) Pb^+(aq) + 2NO_3(aq) + 2KCl(aq) rightarrow PbCl_2(s) + 2K^+(aq) + 2NO^- _3(aq) (C) Pb^2+(aq) + 2Cl(aq)rightarrow PbCl_2(s) (D) K^+(aq) + NO^- _3(aq) rightarrow KNO_3(aq)
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