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4.62 ml c2h5OH ( m = 46.07 g/mol and density = 0.789g/mol) is combusted in the presence of 15.55g of o2 and 3.72 g of h2o . determine the precentage yeild c2h5oh10 + 3o2 = 2co2 + 3h2o
This reaction has a CO2 percent yield of 62.3% What will be the mass of CO2 EXPERIMENTALLY obtained when 44.5g O2 and 24.6g C2H5OH are reacted? Molar masses: C2H5OH...
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<ol><li>The heat of combustion of 1 mole of C2H4 is given as: </li></ol>C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(g) ΔHrxn = ? kJ
C2H4 + 3O2 ---> 2CO2 + 2 H2OFrom Appendix table∆H°f C2H4 = 52.3Kj/mol∆H°fCO2= -393.5Kj/mol∆H°f H2O(g) = -241.8Kj/mol∆H°rxn= ∆H°products - ∆H°reactants∆H°rxn = [2(-393.5)+2(-241.8)] - [52.3]∆H°rxn = -1322.9KJ/mol
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The alcohol in "gasohol" burns according to the following equation.
C2H6O+3O2----> 2CO2+3H2O
If 25 mol of C2H5OH burns this way, how many moles of oxygen are needed
Solution: The amount of substance of Oxygen: n(O2) = 3 mol *25 mol/1 mol = 75 mol Answer: By the reaction 75 mol of oxygen are needed.
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Which of these reactions can be classified as combustion reactions?
Na + Cl → NaCl
CH4 + O2 → CO2 + 2H2O
C2H6O + 3O2 → 2CO2 + 3H2O
2K + MgBr2 → 2KBr + Mg
Two reactions can be classified as combustion reactions: CH4 + O2 → CO2 + 2H2O C2H6O + 3O2 → 2CO2 + 3H2O
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A sample of rubbing alcohol solution contains ethanol, C2H5OH(l). If the sample contains 1.25x10^23 atoms of hydrogen in the ethanol, what amount in moles of ethanol is in the sample?
The amount of moles for atom\molecule\compound etc. can be calculated based on amount of atom\molecule\structural units etc. using Avogadro constant (NA=6.02x10^23) that represents 1 mole. One molecule of ethanol consists...
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The reaction, c2h6o (I) + 3o2 (g) 2co2 (g) + 3h2o (g), is the combustion of ethanol. What occurs as the reaction proceeds?
Solution: 1. it is a combustion reaction. 2. There is a stormy separation of CO2 and H2O(gas). 3. H2O condenses (turns into a liquid state) after a while. 4. During the reaction a large...
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if 0.3 moles of H2O were produced how man moles of carbon dioxide would also have been produced
C2H6 + 7/2O2 -> 2CO2 + 3H2O
if 0.3 moles of H2O were produced how man moles of carbon dioxide would also have been producedC2H6 + 7/2O2 -> 2CO2 + 3H2OSolution:n(CO2)=2/3*n(H2O);n(CO2)=(2*0,3)/3=0,2 molAnswer:n(CO2)=0,2 mol.
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In the reaction 4Al(s)+3O2(g)-> Al2O3(s)
A. How many moles of oxygen react with 5.5 miles of Al?
B. How many moles of Al2O3 can be produced from 5.5 moles of Al?
A. 4,125B. 1,375
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A sample of a wine contain 28% C2H5OH by volume and rest is H2O. Calculate mole fraction of
C2H5OH in wine, density of C2H5OH = 0.79 gm/ml, density of water = 1 gm/ml.
0.28 x 0.79 = 0.22 g.0.22/46 = 0.004 .
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How many moles of H2O are produced from 0.100 mole of C2H5OH shown in the reaction? C2H5OH + 3O2 2CO2 + 3H2O
According to the equation we obtain 3 molecules of H2O from each molecule of C2H5OH. Thus, from 0.100 mole of C2H5OH we will obtain 0.300 mole of H2O.
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