PRE-LAB QUESTIONS 1. Calculate the enthalpy change for the reaction P,o,(s) + 202(g)--PO10(g) Given the following...
to two e tem- metal. e after capac- 5.63 Calculate the enthalpy change for the reaction P406(s) + 202(8) — P4010(s) given the following enthalpies of reaction: P4(s) + 3 02(8) - PO6(s) AH = -1640.1 kJ P4(s) + 502(8) —— P4010(s) AH = -2940.1 kJ solves
2. Two solid objects, A and B, are placed in boiling water and allowed to come to the same tem- perature there. Each is then lifted and placed in separate beakers containing 100 g water at 10.0°C. Object A increases the water temperature by 3.50°C; B increases the water temperature by 2.60°C. Which object has the larger heat capacity? Explain your reasoning.
4. Calculate the enthalpy (AH) change for the reaction : enthalples of reaction: PAO66) + 202 --> PAO101) given the following show your work- PA(s) + 302(e) ---> P.06(s) P4(s) + 502) --> PAO10(s) AH= -1640.1 KJ AH= -2940.1 KJ
1. Calculate the quantity of heat released when 8.Sg of hydrogen peroxide decomposes, given: atomic weights 0=16, and H= 1. Hydrogen peroxide decomposes to water and oxygen according to the reaction: H = -196KJ 2. Given the speclflc heat, c,, of water Is 4.18 J/g 0c,how much heat Is needed to warm 200g of water from 22°c to 98°C? q=mC,AT 3. If 20.9KJ of heat were added to 250g of liquid water, how much would its temperature Increase? (Use 4.18 J/goc...
Using the equations Ca (s)2 O (g) Сао (s) 2 H2 (g) Determine the enthalpy for the reaction Са (s) + 2 H0 () — Са(ОН)2 (s) + H2 (9). CaO (s) AH° = -635 kJ/mol -64 kJ/mol H2O ()Ca(OH)2 (s) AH O2 (g)2 H2O (I) AH° = -572 kJ/mol kJ/mol 1 2 3 4 6 C 5 7 8 9 +/- 0 x 100 LO 11.01 g of MgSO4 is placed into 100.0 mL of water. The water's temperature...
1. Calculate the change in enthalpy for this reaction: 2C(s) + H2(g) → C2H2(g) Given the following AHo -1299.5 kJ HP =-393.5 kJ HP -285.8 kJ CHI2(g) + (5/2)O2(g) → 2CO2(g) + H2O(1) C(s) + O2(g) → CO2(g) H2(g) + (12)O2(g) → H2O(1) A balloon contains 0.45 g of carbon dioxide and 0.6 grams of helium at 1.1 bar. If you compress the container to 80%ofits original volume, what will be the final pressure? Half a liter of water is...
Using standard heats of formation, calculate the standard enthalpy change for the following reaction 2HBr(g) H2(g) + Br2() ANSWER kJ Submit Answer Retry Entire Group 2 more group attempts remaining Given the standard enthalpy changes for the following two reactions: (1) Zn(s)+ Cl2(g) ZnCl2(s) AH° = -415.0 kJ (2) Fe(s) + Cl2(g) FeCl2(s) AH° = -341.8 kJ what is the standard enthalpy change for the reaction: (3) Zn(s) + FeCl(s) AH° ? ZnCl2(s) + Fe(s) kJ Given the standard enthalpy...
re-lab questions. 1. Use the following enthalpies of formation to determine the enthalpy of reaction for the decomposition of formic acid, HCOOH(), into CO(g) and H:O() ??9 [CO(g)--110.5 kJ/mol ??''t [ H2O(l) ] -285.5 kJ/mol ??9 [HCOOH(1)] -424.7 kJ/mol 6.5° C When 20 g of Al (s) at 98° C is placed in 50 g of H:00), the final temperature is 2 What was the initial temperature of the water? 2.
A.Using standard heats of formation, calculate the standard enthalpy change for the following reaction. N2(g) + 3H2(g) = 2NH3(g) B.Using standard heats of formation, calculate the standard enthalpy change for the following reaction. CaCO3(s) = CaO(s) + CO2(g) C. A scientist measures the standard enthalpy change for the following reaction to be -2910.6 kJ: 2C2H6(g) + 7 O2(g) = 4CO2(g) + 6 H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy...
4. Calculate the energy change for the following reaction, using the standard enthalpies of formation provided. SO2Cl2 (I)+2 H2O (I)2 HCI (g) + H,SO4 ) Substance AH (/mol) SO-ClO H2O0) HO(g) НСКО НС 9) H2SO 0) H-SO (aq) -394.1 -285.8 -241.8 92.3 -167.2 814.0 -909.3 If 25.0 kJ of heat energy is added to 50.0 g of water initially at 25°C, what will be the final temperature of the water? The specific heat of water is 4.18 J g1 °C