Homework Answers
2NaHCO3(s) --------> Na2CO3(s) + CO2(g) + H2O(l)
40g of NaHCO3 gives -30.8KJ
2*84g of NaHCO3 gives = -30.8*2*84/40 = -129.36KJ
2NaHCO3(s) --------> Na2CO3(s) + CO2(g) +
H2O(l) 
Hrxn = -129.36KJ
H0rxn
=
H0f products -
H0f reactants
-129.36 =
H0f Na2CO3 +
H0fCO2(g) +
H0f H2O(l) - 2H0f
NaHCO3
-129.36 = -1131-394-286-2H0f
NaHCO3
H0f
NaHCO3 = -840.82KJ/mole >>>answer
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Upon heating, baking soda decomposes as follows, creating the holes in baked bread: 2NaHCO3(s) - NaCO3(s)...
Upon heating, baking soda decomposes as follows, creating the holes in baked bread: 2NaHCO3(s) > Na,CO3(s)...
Upon heating, baking soda decomposes as follows, creating the holes in baked bread: 2NaHCO3(s) > Na,CO3(s) + CO2(g) +H,0(1) 4th attempt Feedback W See Periodic Table D See Hint When 35.5 g NaHCO3 decomposes, the change in energy is-27.3 kJ. Use this information and the additional information provided to calculate the AHF of NaHCO3. Substance H20(1) CO2(g) Na2CO3(s) AH (kJ/mol) -286 -394 - 1131 AH f of NaHCO3-937 kJ/mol
Baking soda decomposes on heating as follows, creating the holes in baked bread: 2NaHCO3(s) — Na,CO()...
Baking soda decomposes on heating as follows, creating the holes in baked bread: 2NaHCO3(s) — Na,CO() + CO2(g) +H,0(1) AH --129.3 kJ 1st attempt Il See Periodic Table O See Hint Calculate the standard molar enthalpy of formation of NaHCO3(s) from the enthalpy of the baking soda decomposition reaction and the following information: AH9 [Na2CO3(s)] - -1131kJ AHCO2(g)] = -394 kJ AH9 [H2000) = -286 kJ Standard molar enthalpy:
On heating, baking soda decomposes as follows, creating the holes in baked bread: 2NaHCO_3(s) rightarrow Na_2CO_3(s)...
On heating, baking soda decomposes as follows, creating the holes in baked bread: 2NaHCO_3(s) rightarrow Na_2CO_3(s) + CO_2(g) + H_2O(l) When 41.0 g NaHCO_3 decomposes, -31.5 kJ of energy is released. Use this information and the additional information provided to calculate the Delta H degree_f of NaHCO_3.
Many chefs keep baking soda handy in the kitchen to put out grease fires. Calculate the...
Many chefs keep baking soda handy in the kitchen to put out grease fires. Calculate the AHan for the decomposition of baking soda (shown below), which helps to smother the flames 2 NaHCO3(s) -- Na2CO3(s) + CO2(g) + H2010 AH,(NaHCO3(s)) = -947 kJ/mol AH,(Na2CO3(s)) = -1131 kJ/mol AH,(H2O(0) = -285.9 kJ/mol AH,(CO2(g)) = -393.5 kJ/mol O -1810 kJ O +84 kJ O +1895 kJ O-00W O +98 kJ Type here to search Beat
12 A baker uses sodium hydrogen carbonate (baking soda) as the leavening agent in a banana-nut quickbread. The baking soda decomposes according to two possible reactions. Reaction 1: 2 NaHCO3(s)-Na2C...
12
A baker uses sodium hydrogen carbonate (baking soda) as the leavening agent in a banana-nut quickbread. The baking soda decomposes according to two possible reactions. Reaction 1: 2 NaHCO3(s)-Na2CO3(s) + Њ0() + CO2(g) Reaction 2: NaHCO3(s) H(a) H00) CO2(g) +Na (aq) Calculate the volume (in mL) of Co2 that forms at 220.°C and 0.995 atm per gram of NaHCO3 by each of the reaction processes mL (Reaction 1) mL (Reaction 2)
A baker uses sodium hydrogen carbonate (baking soda)...
A recipe for scones asks for 1.80 g of baking soda (sodium hydrogen carbonate). Upon heating...
A recipe for scones asks for 1.80 g of baking soda (sodium hydrogen carbonate). Upon heating at 180 °C at a pressure of 1.00 bar, baking soda decomposes as follows: 2 NaHCO3(s) + CO2(g) + Na2CO3(s) + H20(1) If the volume of the dough before baking (i.e. before the decomposition reaction takes place) is 668 ml, what will be the total volume of the scones after baking, in mL? Assume that the rising of the dough is only caused by...
Upon heating, baking soda decomposes as follows, creating the holes in baked bread: 2NaHCO3(s) > Na,CO3(s) + CO2(g) +H,0(1) 4th attempt Feedback W See Periodic Table D See Hint When 35.5 g NaHCO3 decomposes, the change in energy is-27.3 kJ. Use this information and the additional information provided to calculate the AHF of NaHCO3. Substance H20(1) CO2(g) Na2CO3(s) AH (kJ/mol) -286 -394 - 1131 AH f of NaHCO3-937 kJ/mol
Baking soda decomposes on heating as follows, creating the holes in baked bread: 2NaHCO3(s) — Na,CO() + CO2(g) +H,0(1) AH --129.3 kJ 1st attempt Il See Periodic Table O See Hint Calculate the standard molar enthalpy of formation of NaHCO3(s) from the enthalpy of the baking soda decomposition reaction and the following information: AH9 [Na2CO3(s)] - -1131kJ AHCO2(g)] = -394 kJ AH9 [H2000) = -286 kJ Standard molar enthalpy:
On heating, baking soda decomposes as follows, creating the holes in baked bread: 2NaHCO_3(s) rightarrow Na_2CO_3(s) + CO_2(g) + H_2O(l) When 41.0 g NaHCO_3 decomposes, -31.5 kJ of energy is released. Use this information and the additional information provided to calculate the Delta H degree_f of NaHCO_3.
Many chefs keep baking soda handy in the kitchen to put out grease fires. Calculate the AHan for the decomposition of baking soda (shown below), which helps to smother the flames 2 NaHCO3(s) -- Na2CO3(s) + CO2(g) + H2010 AH,(NaHCO3(s)) = -947 kJ/mol AH,(Na2CO3(s)) = -1131 kJ/mol AH,(H2O(0) = -285.9 kJ/mol AH,(CO2(g)) = -393.5 kJ/mol O -1810 kJ O +84 kJ O +1895 kJ O-00W O +98 kJ Type here to search Beat
12
A baker uses sodium hydrogen carbonate (baking soda) as the leavening agent in a banana-nut quickbread. The baking soda decomposes according to two possible reactions. Reaction 1: 2 NaHCO3(s)-Na2CO3(s) + Њ0() + CO2(g) Reaction 2: NaHCO3(s) H(a) H00) CO2(g) +Na (aq) Calculate the volume (in mL) of Co2 that forms at 220.°C and 0.995 atm per gram of NaHCO3 by each of the reaction processes mL (Reaction 1) mL (Reaction 2)
A baker uses sodium hydrogen carbonate (baking soda)...
A recipe for scones asks for 1.80 g of baking soda (sodium hydrogen carbonate). Upon heating at 180 °C at a pressure of 1.00 bar, baking soda decomposes as follows: 2 NaHCO3(s) + CO2(g) + Na2CO3(s) + H20(1) If the volume of the dough before baking (i.e. before the decomposition reaction takes place) is 668 ml, what will be the total volume of the scones after baking, in mL? Assume that the rising of the dough is only caused by...
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