Homework Answers
Number of moles of Na2S2O3 
moles
2 moles of NaS2O3 neutralize one mole of triiodide ion.
Number of moles of triiodide ion 
moles.
Molarity of triiodide ion 
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The amount of l_3^-(aq) in a solution can be determined by titraction with a solution containing...
The amount of I−3(aq) in a solution can be determined by titration with a solution containing...
The amount of I−3(aq) in a solution can be determined by titration with a solution containing a known concentration of S2O2−3(aq) (thiosulfate ion). The determination is based on the net ionic equation 2S2O2−3(aq)+I−3(aq)⟶S4O2−6(aq)+3I−(aq) Given that it requires 27.7 mL of 0.440 M Na2S2O3(aq) to titrate a 15.0 mL sample of I−3(aq), calculate the molarity of I−3(aq) in the solution.
complete combustion of 3.10 g of a hydrocarbon produced 9.90 g of CO2 and 3.55 g...
complete combustion of 3.10 g of a hydrocarbon
produced 9.90 g of CO2 and 3.55 g of H2O. what is the empirical
formula for the hydrocarbon
< Question 6 of 17 The amount of (aq) in a solution can be determined by titration with a solution containing a known concentration of 5,0} (aq) (thiosulfate ion). The determination is based on the net ionic equation 25,0(aq) + 15 (aq) -5,0% (aq) + 31 (aq) Given that it requires 37.3 mL of...
A 0.450 g sample of impure CaCO, (s) is dissolved in 50.0 mL of 0.150 M...
A 0.450 g sample of impure CaCO, (s) is dissolved in 50.0 mL of 0.150 M HCl(aq). The equation for the reaction is CaCO,(s) + 2 HCl(aq) — CaCl, (aq) + H, 0(1) + CO2(g) The excess HCl(aq) is titrated by 4.85 mL of 0.125 M NaOH(aq) Calculate the mass percentage of Caco, (s) in the sample. mass percentage: The zinc content of a 1.03 g ore sample was determined by dissolving the ore in HCl, which reacts with the...
The concentration of hydrogen peroxide in a solution is determined by titration with a 0.1258 M...
The concentration of hydrogen peroxide in a solution is determined by titration with a 0.1258 M Ce++ solution. The balanced net ionic equation for the reaction is: 2ce4+ (aq) + H2O2(aq) + 2H20(1)— 2Ce3+ (aq) + O2(g) + 2H30+ (aq) (a) If 18.37 mL of the 0.1258 M Ce4+ solution are needed to react completely with 40.00 mL of the hydrogen peroxide solution, what is the concentration of the hydrogen peroxide solution? M (b) Which of the two solutions was...
by titration with permanganate solution. The 13) Hydrogen peroxide, H2O2, can be determined by titration with perman...
by titration with permanganate solution. The 13) Hydrogen peroxide, H2O2, can be determined by titration with permans reaction is: 2 MnO4 (aq) + 5 H2O2(aq) + 6 H+ + 502(g) + 2 Mn2(aq) + 8 H20 ate 5.0 mL of a H2Oz(aq) If it required 80.0 mL of 0.0220 molar MnO4 (aq) solution to titrate 5.0 m solution, what is the molarity of the H2O2(aq) solution?
(5 marks) A solution containing chloride ion was analyzed by the mL sample containing chloride ion...
(5 marks) A solution containing chloride ion was analyzed by the mL sample containing chloride ion was treated with 25.00 mL of 0.2500 M silver nitrate. The precipitated AgCl was removed from the solution by filtration, and 1.00 mL of 0.1000 M Fe3 was added to the filtrate in order to titrate excess Ag with SCN. A volume of 10.67 mL of 0.2380 M KSCN was required for solution to turn red colour. What is the concentration of chloride ion...
8. Molarity a) The molarity of an aqueous solution of sodium hydroxide, is determined by titration...
8. Molarity a) The molarity of an aqueous solution of sodium hydroxide, is determined by titration against an M hydrochloric acid, solution. If 35.3 mL of the base are required to neutralize 18.2 mL of hydrochloric acid, what is the molarity of the sodium hydroxide solution? Molarity = __________ M b) An aqueous solution has a hydroxide ion concentration of M. What is the hydronium ion concentration in this solution? Concentration = _____M Is this solution acidic, basic or neutral?...
13) Hydrogen peroxide, H202, can be determined by titration value, H2O2, can be determined by titration...
13) Hydrogen peroxide, H202, can be determined by titration value, H2O2, can be determined by titration with permanganate son reaction is: 2 MnO4 (aq) + 5 H2O2(aq) + 6 H+ + 502(g) + 2 Mn2+(aq) + 8 H20 If it required 80.0 mL of 0.0220 molar MnO4 (aq) solution to ou.U mL of 0.0220 molar MnO4 (aq) solution to titrate 5.0 mL of a H2O2(aq solution, what is the molarity of the H2O2(aq) solution?
Suppose that a small amount of HCl is added to a buffer solution containing HF(aq) and...
Suppose that a small amount of HCl is added to a buffer solution containing HF(aq) and NaF(aq). What change will occur to the buffer solution? The concentration of fluoride ion will decrease and the concentration of hydrogen fluoride will increase. The concentration of fluoride ion will increase, and the concentration of hydrogen fluoride will decrease. The concentration of hydronium ion will decrease. The concentration of fluoride ion will increase, and the concentration of hydrogen fluoride will increase.
Ca(OH)2 (aq) + 2HCl (aq) CaCl2 (aq) + H2O (l) An aqueous solution of Ca(OH)2with a...
Ca(OH)2 (aq) + 2HCl (aq) CaCl2 (aq) + H2O (l)
An aqueous solution of Ca(OH)2with a concentration of
0.161 M was used to titrate 25.00 mL of aqueous HCl. 18.63
mL of the Ca(OH)2was required to reach the endpoint of
the titration. An aqueous solution of Ca(OH)2with a
concentration of 0.161 M was used to titrate 25.00 mL of
aqueous HCl. 18.63 mL of the Ca(OH)2was required to
reach the endpoint of the titration.
A) How many moles of base...
complete combustion of 3.10 g of a hydrocarbon
produced 9.90 g of CO2 and 3.55 g of H2O. what is the empirical
formula for the hydrocarbon
< Question 6 of 17 The amount of (aq) in a solution can be determined by titration with a solution containing a known concentration of 5,0} (aq) (thiosulfate ion). The determination is based on the net ionic equation 25,0(aq) + 15 (aq) -5,0% (aq) + 31 (aq) Given that it requires 37.3 mL of...
A 0.450 g sample of impure CaCO, (s) is dissolved in 50.0 mL of 0.150 M HCl(aq). The equation for the reaction is CaCO,(s) + 2 HCl(aq) — CaCl, (aq) + H, 0(1) + CO2(g) The excess HCl(aq) is titrated by 4.85 mL of 0.125 M NaOH(aq) Calculate the mass percentage of Caco, (s) in the sample. mass percentage: The zinc content of a 1.03 g ore sample was determined by dissolving the ore in HCl, which reacts with the...
The concentration of hydrogen peroxide in a solution is determined by titration with a 0.1258 M Ce++ solution. The balanced net ionic equation for the reaction is: 2ce4+ (aq) + H2O2(aq) + 2H20(1)— 2Ce3+ (aq) + O2(g) + 2H30+ (aq) (a) If 18.37 mL of the 0.1258 M Ce4+ solution are needed to react completely with 40.00 mL of the hydrogen peroxide solution, what is the concentration of the hydrogen peroxide solution? M (b) Which of the two solutions was...
by titration with permanganate solution. The 13) Hydrogen peroxide, H2O2, can be determined by titration with permans reaction is: 2 MnO4 (aq) + 5 H2O2(aq) + 6 H+ + 502(g) + 2 Mn2(aq) + 8 H20 ate 5.0 mL of a H2Oz(aq) If it required 80.0 mL of 0.0220 molar MnO4 (aq) solution to titrate 5.0 m solution, what is the molarity of the H2O2(aq) solution?
(5 marks) A solution containing chloride ion was analyzed by the mL sample containing chloride ion was treated with 25.00 mL of 0.2500 M silver nitrate. The precipitated AgCl was removed from the solution by filtration, and 1.00 mL of 0.1000 M Fe3 was added to the filtrate in order to titrate excess Ag with SCN. A volume of 10.67 mL of 0.2380 M KSCN was required for solution to turn red colour. What is the concentration of chloride ion...
13) Hydrogen peroxide, H202, can be determined by titration value, H2O2, can be determined by titration with permanganate son reaction is: 2 MnO4 (aq) + 5 H2O2(aq) + 6 H+ + 502(g) + 2 Mn2+(aq) + 8 H20 If it required 80.0 mL of 0.0220 molar MnO4 (aq) solution to ou.U mL of 0.0220 molar MnO4 (aq) solution to titrate 5.0 mL of a H2O2(aq solution, what is the molarity of the H2O2(aq) solution?
Suppose that a small amount of HCl is added to a buffer solution containing HF(aq) and NaF(aq). What change will occur to the buffer solution? The concentration of fluoride ion will decrease and the concentration of hydrogen fluoride will increase. The concentration of fluoride ion will increase, and the concentration of hydrogen fluoride will decrease. The concentration of hydronium ion will decrease. The concentration of fluoride ion will increase, and the concentration of hydrogen fluoride will increase.
Ca(OH)2 (aq) + 2HCl (aq) CaCl2 (aq) + H2O (l)
An aqueous solution of Ca(OH)2with a concentration of
0.161 M was used to titrate 25.00 mL of aqueous HCl. 18.63
mL of the Ca(OH)2was required to reach the endpoint of
the titration. An aqueous solution of Ca(OH)2with a
concentration of 0.161 M was used to titrate 25.00 mL of
aqueous HCl. 18.63 mL of the Ca(OH)2was required to
reach the endpoint of the titration.
A) How many moles of base...
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