the reaction of a gummy bear with molten KClO3 is an example of an ______ reaction....
Homework Answers
Answer:
The reaction is Exothermic--------------> option(a)
Explanation:
When heated the potassium chlorate it decomposes, producing
sufficient oxygen to ignite the sugar in the gummy bear. Since the
oxidation of the sugar is very exothermic, sodium chlorate
continues to decompose to oxygen, and the rate of combustion
becomes very rapid.
The chemical equations for this demo are:
2KClO3(s) à 2KCl(s) + 3O2(g)
C6H12O6 + 6O2 --> 6CO2 + 6H2O
If you place a gummy bear in the test tube, it will react with the melted salt, and the sugar and gelatin contained in the bear will firstly carbonize, and then burn
Because this reaction is extremely exothermic, the heat given off of the reaction causes the sugar in the Gummy Bear to explode into a marshmallow-like substance.
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the
reaction of a gummy bear with molten KClO3 is an example of an
______ reaction....
Assume that a gummy bear consists 100% of glucose, C6H12O6 (MW = 180 g/mol). A gummy...
Assume that a gummy bear consists 100% of glucose, C6H12O6 (MW = 180 g/mol). A gummy bear weighs 228 mg. What is the heat of reaction for the total combustion of one gummy bear in a reaction with molten potassium chlorate, KClO3? 4 KClO3(s) + C6H12O6(s) = 4 KCl(s) + 6 CO2(g) + 6 H2O(g); ΔH0 r = –2726 kJ/mol a. 3.45 kJ b. 34.5 kJ c. 172.5 kJ d. 2726 kJ
Gummy bears decompose rapidly and explosively in molten potassium chlorate. Both decomposition and combustion react...
Gummy bears decompose rapidly and explosively in molten potassium chlorate. Both decomposition and combustion reactions happen simultaneously according to the balanced equation: C12H22011(s) + 8 KClO3(1) --> 12 CO2(g) + 11 H2O(g) + 8 KCl(aq) Using the AHºf values below, calculate the standard enthalpy change for this reaction. (Report your answer in standard notation.) C12H22011 (8) KCIO3 (1) CO2 (g) H2O (g) KCl (aq) A Hºf (kJ/mol) -2225.5 -397.73 -393.51 -241.82 -436.7 AH° rxn = * kJ
Gummy bears decompose rapidly and explosively in molten potassium chlorate. Both decomposition and combustion reactions happen...
Gummy bears decompose rapidly and explosively in molten potassium chlorate. Both decomposition and combustion reactions happen simultaneously according to the balanced equation C2H2011(s) + 8 KCIO,(0) -> 12 CO () +11 H2O(g) +8 KCl(aq) Using the values below, calculate the standard entropy change for this reaction (Report your new in standard notation) C12H2011 (8) KCIO, (1) CO, H,0 KCI () S (J/mol K) 3602 143.1 213.74 15883 82 59 AS =
Which of the following processes are exothermic? a. a match burns b. molten metal solidifies c....
Which of the following processes are exothermic? a. a match burns b. molten metal solidifies c. Rubbing alcohol feels cold on the skin Which of the following processes are endothermic? a. a match burns b. molten metal solidifies c. rubbing alcohol feels cold on the skin
Calculate the enthalpy change when 1 kg ice melts. AHfusion = 6.009 kJ/mol 18. a. 111...
Calculate the enthalpy change when 1 kg ice melts. AHfusion = 6.009 kJ/mol 18. a. 111 kJ/mol b. 223 kJ/mol c. 334 kJ/mol d. 445 kJ/mol Assume that a gummy bear consists 100% of glucose, CeH12O6 (MW- 180 g/mol). A gummy bear 20. weighs 228 mg. What is the heat of reaction for the total combustion of one gummy bear in a reaction with molten potassium chlorate, KCIO,? 4 KclOs(s)+CaH12O6(s) = 4 KCI (s) + 6 CO2(g) + 6 H2O(g);...
Gummy bears decompose rapidly and explosively in molten potassium chlorate Both decomposition and combustion reactions happen...
Gummy bears decompose rapidly and explosively in molten potassium chlorate Both decomposition and combustion reactions happen simultaneously according to the balanced equation CH,2011(s) + 8 KCIO3(1) -->12 COX) +11 H2O(g) + 8 KCl(aq) Use the free energy of formation values below to calculate AG CH2011) KCIO, (1) CO, (2) H:0 () KCI(Q) AGⓇ, (kJ/mol) -1544.6 -296 25 -394 36 -228 57 409 14 AG
The weekly revenue of a business selling gummy bear bags is a continuous function of price....
The weekly revenue of a business selling gummy bear bags is a continuous function of price. Weekly revenue is $7,608 when the price per is $1.70 and the growth rate is 6%. Revenue is changing exponentially. What will revenue be when the price is $4.90 (hint: solver!) Weekly Revenue = $ (nearest $10) How fast revenue be changing when the price is $4.90 Revenue Rate = Select an answer $1$=unitless (nearest 1) (hint: this answer comes quickly from the last...
Differentiate between exothermic and endothermic reaction and give one example of each.
Differentiate between exothermic and endothermic reaction and give one example of each.
Objective 2.13 The weekly revenue of a business selling gummy bear bags is a continuous function of price Weekly revenu...
Objective 2.13 The weekly revenue of a business selling gummy bear bags is a continuous function of price Weekly revenue is $6,243 when the price per is $2.20 and the growth rate is 10%. Revenue is changing exponentially. What will revenue be when the price is $4.60 (hint: solver!) Weekly Revenue = $ | (nearest $10) How fast revenue be changing when the price is $4.60 Revenue Rate = $/$=unitless (nearest 1) Select an answer (hint: this answer comes quickly...
5 g of molten NaCl is at melting temp. The salt is added to 25 mL...
5 g of molten NaCl is at melting temp. The salt is added to 25 mL of water at 25 C in a coffee cup calorimeter. The salt becomes solid and the temp of water increases to 47.9C. a.) calculate amount of heat transferred in Joules b.) is the freezing of salt endothermic or exothermic? c.) calculate the moles enthalpy of fusion for NaCl in kJ/mol
Gummy bears decompose rapidly and explosively in molten potassium chlorate. Both decomposition and combustion reactions happen simultaneously according to the balanced equation: C12H22011(s) + 8 KClO3(1) --> 12 CO2(g) + 11 H2O(g) + 8 KCl(aq) Using the AHºf values below, calculate the standard enthalpy change for this reaction. (Report your answer in standard notation.) C12H22011 (8) KCIO3 (1) CO2 (g) H2O (g) KCl (aq) A Hºf (kJ/mol) -2225.5 -397.73 -393.51 -241.82 -436.7 AH° rxn = * kJ
Gummy bears decompose rapidly and explosively in molten potassium chlorate. Both decomposition and combustion reactions happen simultaneously according to the balanced equation C2H2011(s) + 8 KCIO,(0) -> 12 CO () +11 H2O(g) +8 KCl(aq) Using the values below, calculate the standard entropy change for this reaction (Report your new in standard notation) C12H2011 (8) KCIO, (1) CO, H,0 KCI () S (J/mol K) 3602 143.1 213.74 15883 82 59 AS =
Calculate the enthalpy change when 1 kg ice melts. AHfusion = 6.009 kJ/mol 18. a. 111 kJ/mol b. 223 kJ/mol c. 334 kJ/mol d. 445 kJ/mol Assume that a gummy bear consists 100% of glucose, CeH12O6 (MW- 180 g/mol). A gummy bear 20. weighs 228 mg. What is the heat of reaction for the total combustion of one gummy bear in a reaction with molten potassium chlorate, KCIO,? 4 KclOs(s)+CaH12O6(s) = 4 KCI (s) + 6 CO2(g) + 6 H2O(g);...
Gummy bears decompose rapidly and explosively in molten potassium chlorate Both decomposition and combustion reactions happen simultaneously according to the balanced equation CH,2011(s) + 8 KCIO3(1) -->12 COX) +11 H2O(g) + 8 KCl(aq) Use the free energy of formation values below to calculate AG CH2011) KCIO, (1) CO, (2) H:0 () KCI(Q) AGⓇ, (kJ/mol) -1544.6 -296 25 -394 36 -228 57 409 14 AG
The weekly revenue of a business selling gummy bear bags is a continuous function of price. Weekly revenue is $7,608 when the price per is $1.70 and the growth rate is 6%. Revenue is changing exponentially. What will revenue be when the price is $4.90 (hint: solver!) Weekly Revenue = $ (nearest $10) How fast revenue be changing when the price is $4.90 Revenue Rate = Select an answer $1$=unitless (nearest 1) (hint: this answer comes quickly from the last...
Objective 2.13 The weekly revenue of a business selling gummy bear bags is a continuous function of price Weekly revenue is $6,243 when the price per is $2.20 and the growth rate is 10%. Revenue is changing exponentially. What will revenue be when the price is $4.60 (hint: solver!) Weekly Revenue = $ | (nearest $10) How fast revenue be changing when the price is $4.60 Revenue Rate = $/$=unitless (nearest 1) Select an answer (hint: this answer comes quickly...
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