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The molar heat capacity of ethane is represented in the temperature range of 298K to 400K by the empirical expression Cp,m/(JK-1mol-1)=14.73+0.1272(T/K). The corresponding expressions for C(s) and H2(g) are of the form Cp,m(J-1mol-1)=a+bT+c/T2 where a, b, and c are 16.86, 4.77x10-3, and -8.54x105 for C(s) and 27.28, 3.26x10-3, and 0.50x105 for H2(g). Calculate the standard enthalpy of formation of ethane at 350K from its value at 298K.
Consider the reaction Pb(s) + 2H^+(aq) ? Pb^2+(aq) + H2(g). If the hydrogen gas pressure is maintained at 1.00 atm and the lead(II) ion concentration is 0.025 M, find the pH at which this reaction is at equilibrium.
Assuming that the specific heat capacity of the solution is the same as for water, calculate the heat transfer from system to surroundings, in kilojoules
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question a gas is compressed at a constant pressure of 0.270 atm from a volume of 8.00 l to 5.00 l. in the process 400
Explain your reasoning for each by writing a balanced net ionic equation to describe its behavior in water.
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