At one time, a common means of forming small quantities of oxygen gas in the laboratory...
At one time, a common means of forming small quantities of oxygen gas in the laboratory was to heat KClO3: 2KClO3(s)→2KCl(s)+3O2(g)ΔH=−89.4kJ
Part A For this reaction, calculate ΔH for the formation of 1.35 mol of O2
. Part B For this reaction, calculate ΔH for the formation of 10.1 g of KCl.
Part C The decomposition of KClO3 proceeds spontaneously when it is heated. Do you think that the reverse reaction, the formation of KClO3 from KCl and O2, is likely to be feasible under ordinary conditions? Explain your answer.
Homework Answers
Add Answer to:
At one time, a common means of forming small quantities of
oxygen gas in the laboratory...
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s). The...
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s). The equation for the reaction is 2KClO3⟶2KCl+3O2⟶2KCl+3O2 Calculate how many grams of O2(g) can be produced from heating 48.8 g KClO3(s).
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s). The...
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s). The equation for the reaction is 2KClO3⟶2KCl+3O2 Calculate how many grams of O2(g) can be produced from heating 98.6 g KClO3(s). mass:
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s) ....
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s) . The equation for the reaction is 2KClO3⟶2KCl+3O2 Calculate how many grams of O2(g) can be produced from heating 70.4 g KClO3(s) STRATEGY: Convert the mass of KClO3 to moles. Convert the number of moles of KClO3 to the number of moles of O2 . Convert the number of moles of O2 to grams. Step 1: 70.4 g KClO3 is equal to 0.574 mol KClO3...
A mixture containing KClO3, K2CO3, KHCO3, and KCl was heated, producing CO2,O2, and H2O gases according...
A mixture containing KClO3, K2CO3, KHCO3, and KCl was heated, producing CO2,O2, and H2O gases according to the following equations: 2KClO3(s)2KHCO3(s)K2CO3(s)→→→2KCl(s)+3O2(g)K2O(s)+H2O(g)+2CO2(g)K2O(s)+CO2(g) The KCl does not react under the conditions of the reaction. 100.0 g of the mixture produces 1.70 g of H2O, 12.66 g of CO2, and 4.00 g of O2. (Assume complete decomposition of the mixture.) You may want to reference (Page) Section 3.7 while completing this problem. a. How many grams of KClO3 were in the original mixture?...
A mixture contains KClO3 and KCl. When the mixture is heated, only the KClO3 decomposes via...
A mixture contains KClO3 and KCl. When the mixture is heated, only the KClO3 decomposes via the following reaction: 2KClO3 (s) → 3O2 (g) + 2KCl (s) In an experiment to determine the percent KClO3 in a KClO3/KCl mixture, the mixture was heated in a crucible several times in order to bring it to constant mass. The following experimental data was obtained. Before Heating Mass empty crucible + lid = 21.77 g Mass crucible + lid+ KClO3/KCl mixture = 26.16...
A mixture contains KClO3 and KCl. When the mixture is heated, only the KClO3 decomposes via...
A mixture contains KClO3 and KCl. When the mixture is heated, only the KClO3 decomposes via the following reaction: 2KClO3 (s) → 3O2 (g) + 2KCl (s) In an experiment to determine the percent KClO3 in a KClO3/KCl mixture, the mixture was heated in a crucible several times in order to bring it to constant mass. The following experimental data was obtained. Before Heating Mass empty crucible + lid = 21.84 g Mass crucible + lid+ KClO3/KCl mixture = 26.19...
1. Calculate the volume of hydrogen gas produced from the reaction of 0.832 g of aluminum...
1. Calculate the volume of hydrogen gas produced from the reaction of 0.832 g of aluminum when completely reacted with excess hydrochloric acid. The gas was collected over water at 25.0 C and a barometric pressure of 736 torr. 2Al (s) + 6HCl (aq) --> 2AlCl3 (aq) + 3H2 (g) 2. What mass of KClO3 decomposed to produce 325 mL of O2 gas at STP. 2KClO3 (s) --> 2KCl (s) + 3O2 (g)
Part A Predict the sign of the entropy change, ΔS∘, for each of the reaction displayed. Drag the appropriate items to...
Part APredict the sign of the entropy change, ΔS∘, for each of the reaction displayed.Drag the appropriate items to their respective bins.Ag+(aq)+Cl−(aq)→AgCl(s)2KClO3(s)→2KCl(s)+3O2(g)2N2O(g)→2N2(g)+O2(g)2Mg(s)+O2(g)→2MgO(s)C7H16(g)+11O2(g)→7CO2(g)+8H2O(g)H2O(l)→H2O(g)Part BCalculate the standard entropy change for the reaction2Mg(s)+O2(g)→2MgO(s)using the data from the following table:SubstanceΔH∘f (kJ/mol)ΔG∘f (kJ/mol)S∘ [J/(K⋅mol)]Mg(s)0.000.0032.70O2(g)0.000.00205.0MgO(s)-602.0-569.627.00Express your answer to four significant figures and include the appropriate units.ΔS∘ =
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KCIO, (s)....
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KCIO, (s). The equation for the reaction is 2 KCI +302 2 KCIO Calculate how many grams of 0, (g) can be produced from heating 11.6 g KCIO, (s). mass:
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KCIO,(s). The...
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KCIO,(s). The equation for the reaction is 2 KCIO, 2 KCI+ 30, Calculate how many grams of 0, (g) can be produced from heating 68.1 g KCIO,($). mass Iodine is prepared both in the laboratory and commercially by adding Cl, (g) to an aqueous solution containing 2 Nal(aq) + Cl2(8) — 1(s) + 2 NaCl(aq) How many grams of sodium iodide, Nal, must be used to...
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KCIO, (s). The equation for the reaction is 2 KCI +302 2 KCIO Calculate how many grams of 0, (g) can be produced from heating 11.6 g KCIO, (s). mass:
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KCIO,(s). The equation for the reaction is 2 KCIO, 2 KCI+ 30, Calculate how many grams of 0, (g) can be produced from heating 68.1 g KCIO,($). mass Iodine is prepared both in the laboratory and commercially by adding Cl, (g) to an aqueous solution containing 2 Nal(aq) + Cl2(8) — 1(s) + 2 NaCl(aq) How many grams of sodium iodide, Nal, must be used to...
Most questions answered within 3 hours.
-
Xanth Co. has 8.9% annual coupon bonds with face value of $1,000
and 7 years remaining...
asked 2 minutes ago -
The Bellevue University bookstore purchases sweatshirts with the
school name and logo from a vendor. The...
asked 5 minutes ago -
Suppose X∼Exp(λ) for some λ >0. Compute E(X) and Var(X).
asked 5 minutes ago -
If you invest the $10,000 you receive at graduation in a mutual
fund which averages a...
asked 7 minutes ago -
Consider 15 mL of an aqueous solution containing 2.0 g of an
organic solute.If the distribution...
asked 7 minutes ago -
Define the following Marketing Psychology Principles of Human
Behavior: Priming, Reciprocity, Social Proof, Decoy Effect,
Scarcity,...
asked 23 minutes ago -
What does the graph of Range vs angle look like? Also what is
the slope of...
asked 26 minutes ago -
a
sample size of _ is needed So there a 99% confidence interval will
have a...
asked 31 minutes ago -
Strategy is an important part of project management and business
decisions. Define strategy and describe in...
asked 35 minutes ago -
Task 5.2 Numerical Analysis Using Nested Loops (13 pts)
Consider the following program:
void setup()
{...
asked 49 minutes ago -
If a lossless transformer has 1000 turns for a primary winding
and 100 turns for the...
asked 57 minutes ago -
Write the net ionic equation for the precipitation reaction that
occurs when aqueous solutions of potassium...
asked 1 hour ago