Question

please help. #89 and #101 please

nc acid, formic acid decomposes to give CO gas HCHO,)H,O0 + CO(g) van der Waals Equation If 3.85 L of carbon monoxide was collected over water 5.101 Calculate the pressure of ethanol vapor, C,H2OH(g), at 82.0°C if 1.000 mol C>H OH(g) occupies 30.00 L. Use the van der Waals equation (see Table 5.7 for data). Com- pare with the result from the ideal gas law. 5.102 Calculate the pressure of water vapor at 120.0°C if 1.000 mol of water vapor occupies 32.50 L. Use the van der Waals equation (see Table 5.7 for data). Compare with the result from the ideal gas law. at 25°C and 689 mmHg, how many grams of formic acid were consumed? 5.88 An aqueous solution of ammonium nitrite, NH,NO, decomposes when heated to give off nitrogen, N,. NH,NO (s)2H,0() + N(g) This reaction may be used to prepare pure nitrogen. How many grams of ammonium nitrite must have reacted if 4.00 dm2 of nitrogen gas was collected over wate 5.103 Calculate the molar volume of ethane at 1.00 atm and 0°Cand at 10.0 atm and 0°C, using the van der Waals equa- tion. The van To simplify, note that the term mal V is small compared with P. Hence, it may be approximated with negligible by substituting nRTIP from the ideal gas law for V in this term. Then the van der Waals equation can be solved for the volume. Compare the results with the values predicted by the ideal gas law 5.104 Calculate the molar volume of oxygen at 1.00 atm and 0°C and at 10.0 atm and 0°C, using the van der Waals equation. The van der Waals constants are given in Table 5.7. (See the note on solving the equation given in Problem 5.103.) Compare the results with the values predicted by the ideal gas law. Also compare with the values obtained from Table 5.3. at 26°C and 97.8 kPa? der Waals constants are given in Table 5.7. Molecular Speeds; Effusion 5.89 Calculate the rms speeds of N molecules at 25°C error 125 C. Sketch approximate curves of the molecular and at speed distributions of Ny at 25°C and at 125°C 5.90 Calculate the rms speed of Br, molecules at 23°C and 1.00 atm. What is the rms speed of Br, at 23°C and 2.00 atm? 5.91 Uranium hexafluoride, UF, is a white solid that sub- limes (vaporizes without melting) at 57°C under normal atmospheric pressure. The compound is used to separate uranium isotopes by effusion. What is the rms speed (in m/s) of a uranium hexafluoride molecule at 57°C

Answer 1

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