At standard conditions, dGo= dHo-TdSo
Where T=298 K
Hence dGo= -144.3x1000 - 298(-36.8)
= -144300+10966.4
= -133333.6 J
dGo=-133.3 KJ
Potassium chlorate, a common oxidizing agent in fireworks and matchheads, undergoes decomposition when heated 4 KCIO3(s)...
Potassium chlorate, a common oxidizing agent in fireworks and matchheads, undergoes decomposition when heated: 4 KCIO3(s) + 3 KCIO4(s) + KCI(s) AH® x = -144.3 kJ/mol, AS IX = -36.8 J/mol K. Calculate AGⓇxn for this reaction. AGºrxn=
8. Potassium chlorate is a common oxidizing agent in match heads and in fireworks. When heated, it goes through a solid-state disproportionation reaction. Calculate and state if the reaction is spontaneous or not? AG sys at 298 K, given AHºsys = -144.0 kJ and ASºsys = -37.0 J/K. (5 points) 4KCIO3(s) + 3KCIO4(s) + KCl(s)
Potassium chlorate (KCIO3) is often used to generate oxygen according to its decomposition reaction (shown below): A.9 2KCI (s) +302(g) 2KCIO3(s) AH (kJ mol) S (JK mol) KCIO3 (s) KCI (s) 397.8 143.1 -435.9 82.6 O2 (g) 0 205.0 Use the thermochemical data provided above to calculate the standard change in Gibbs Energy (AG for this reaction at a temperature of 298K AH 88.6 kJ (A) 4G. AH-TOs (B) -88.6 kJ (C) -223.4 kJ (D) +223.4 kJ (E) 266.1 kJ...
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 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
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 =
4. Using Hess's Law, calculate the enthalpy of formation of potassium chlorate: K (s) + Cl2 (g) + 3/2 02 (g) →KCIO: (s) AH = ? kJ Based on the enthalpy changes for the following reactions: 2 K (8) + Cl2 (g) → 2 KCI (3) AH - 874.0 kJ KCIO: (s) + 3 Mg (8) ► KCl (s) + 3 Mg0 (8) AHxx. - 1852.0 kJ MgO (3) ► Mg (s) + O2(g) AHan = +602.0 kJ
thermometer coffee cups containing reaction mixture When a 7.89-9 sample of solid potassium chlorate dissolves in 32.0 g of water in a coffee-cup calorimeter (see above figure) the temperature falls from 20.00 °C to 3.899 °C. Calculate AH in kl/mol KCIOy for the solution process. KCIO,(s) - K*(aq) + CIO,'(aq) The specific heat of water is 4.18 3/ok Aucution - Kl/mol KCO,
Pb.8. Consider the following balanced thermochenmical equation for the decomposition of the mineral magnesite: MgCOs(s) MgO(s)+CO2(g) AHn 117.3 kJ a) Is heat absorbed or released in the reaction? b) What is AHnn for the reverse reaction? c) What is AH when 5.35 mol of CO2 reacts with excess MgO? d) What is AH when 35.5 g of CO2 reacts with excess MgO? Page 3 of 4 CHE 120 Pb.9. Liquid hydrogen peroxide, an oxidizing agent used in many rocket fuel...
this is a lab of Percentage of Oxygen in Potassium Chlorate Percentage of Oxygen in Potassium Chlorate Purpose of the lab Te esperimentar e te m o rgen in een constante decoration of poche Introduction The thermal decomposition of potassium chore can be described by the following 2KCIO 2 Cl +30 Ent epeal tehnic p e cale from the KCIO We poschodecomposes simply by heating the reaction is very Actitud is a m a ture accent the reaction, we not...