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the molar enthalpy of combustion of ethanol (c2H5OH) is -1366.8kj/mol what is the enthalpy change when 10.00 grams of ethanol is combusted
n(C2H5OH)=m/M=10/46 = 0.2174 molH= (-1366.8)*0.2174 = -297.14 kJAnswer: -297.14 kJ
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If a reaction for the combustion of ethanol has a 29.7KJ/g, what is the molar heat of combustion?
(x kj)/mole= 29.7kj/g, x=1366
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The average molar mass of a mixture of methane and ethane is equal to 30 g / mol. The mass of methane in the mixture is 64 g. Determine the amount of ethane in this mixture.
M(C2H6) = 30.07 g / mol; M(CH4) = 16.04 g / mol; 30.07x + 16.04(1 - x) = 30x = 0.995m(C2H6) = 30.07 × ((64 / 16.04) / 0.005) =...
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equal volumes of methane and ethane are mixed in an empty container at 25 degrees celsius. what fraction of total pressure will be exerted by ethane
P1V1=n1R1T1 P2V2=n2R2T2 R,T,=const (P1V1)n1 = (P2V2)/n2 n1=n2 when volumes are equal P1V1=P2V2, when V1=XV2 P1XV2=P2V2 xP1=P2 ratio of the pressures is inversely proportional
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the standard enthalpy of combustion of ethane, carbon, and hydrogen are -1559.7 kJ/mol, -393kJ/mol and -286kJ/mol respectively.
Use Hess'ss law to find the enthalpy of formation of ethane
ΔHform(C2H6)=ΔHcomb(C2H6)-(2ΔHcomb(C)+3ΔHcomb(H2))=-1559.7-(2(-393)+3(-286))=84,3 kJ/mol
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Define enthalpy of combustion. Calculate the enthalpy of combustion of methanol if the enthalpies of formation of CO2,H20 andCH3OH are respectively .
-393.5kj/mol,-285.8kj/mol and -239.0kj/mol.
Answer: Enthalpy of combustion is the heat released during combustion of one mol amount of any substance by oxygen.You can calculate the combustion enthalpy of methanol using the enthalpy...
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Assuming enthalpy of combustion of hydrogen at 273 K, –286 kJ and enthalpy of fusion of ice at the same temperature to be + 6.0 kJ, calculate enthalpy change during formation of 100 g of ice
Answer: H2 + 1/2O2 = H2O(l) ΔH (H2) =-286 kJ/mol ΔH H2O (s) = H2O(l) =6.0 kJ/mol n = m/M M (H2O) = 18 g/mol n (H2O) = 100 / 18...
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methanol is burned in a camp stove to provide heat for cooking if 18 g of methanol is burned what will the volume of oxygen measured at 37°C and 98.8 KPA required for complete combustion
2CH3OH + 3O2 = 2CO2 + 4H2On (O2) = 3 x n (CH3OH) /2M (CH3OH) = 32.04 g/moln (CH3OH) = 18 / 32.04 = 0.56 moln (O2) = 3 x...
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Suppose we have the following combustion reaction below. If we are given 2 moles of ethane at STP, how many liters of CO2 are produced?
Ethane C2H6 combustion reaction is:C2H6 + 3.5 O2 = 2 CO2 + 3 H2O2 moles ethane produces 4 moles CO2, at STP the volume of CO2 will be:4 mole *...
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A strip of magnesium was burned according to the equation Mgist 1/202(g) → MgOis) and 40.0 kJ of heat was released to the surroundings. Calculate the mass of magnesium burned in the reaction.
2Mg + O2 = 2MgO + 1204 kJ.40 x 48/1204 = 1,59468439 g of Mg.
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