The vapor pressure of a substance is 760.0 torr at 115°C and 14.6 torr at 45°C. What is ΔHvap of the substance?

The vapor pressure of a substance is 760.0 torr at 115°C and 14.6 torr at 45°C....
The vapor pressure of ethanol is 115 torr at 34.9°C. If ΔHvap of ethanol is 38.6 kJ/mol, calculate the temperature (in °C) when the vapor pressure is 760 torr. When I plug everything in I get 1.888 = -4640 *(1/t2-3.247*10^-3) but my algebra is rusty and I don't get the same answer as the book. A detailed explanation would be greatly appreciated. Thanks! lnP2/P1= -Hvap/R*(1/t2-1/t)
The vapor pressure of ethanol is 115 torr at 34.9 oC and ΔHvap of ethanol is 38.6 kJ/mol, use this information and the Clausius-Clapeyron equation (shown below) to calculate the temperature in oC at which the vapor pressure is 760 torr (remember to convert temperatures to K in the equation (K = oC + 273). R = 8.314 J/mol·K. ( Please show each step, step BY step) I am having difficult with finding T2
The vapor pressure of pure water at 25.0 °C is 23.76 torr. The vapor pressure of a solution containing 5.40 g of a nonvolatile substance in 90.0 g of water is 23.32 torr. What is the molecular weight of the solute?
A substance has a vapor pressure of 600 torr at 85 degree C. Its delta H_vap is 31.3 kJ/mol. What is its vapor pressure at 25 degree C?
a.) Determine the normal boiling point of a substance whose vapor pressure is 55.1 mm Hg at 35°C and has a ΔHvap of 32.1 kJ/mol. b.) Determine the vapor pressure (in mm Hg) of a substance at 29°C, whose normal boiling point is 76°C and has a ΔHvap of 38.7 kJ/mol. c.) Which of the temperatures below is most likely to be the boiling point of water at 880 torr? 100°C 92°C 105°C 88°C
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An aqueous solution containing glucose has a vapor pressure of 19.9 torr at 25°C. What would be the vapor pressure of this solution at 45°C? The vapor pressure of pure water is 23.8 torr at 25°C and 71.9 torr at 45°C. Vapor pressure torr If the glucose in the solution were substituted with an equivalent amount (moles) of NaCl, what would be the vapor pressure at 45°C? Vapor pressure torr
Determine the normal boiling point of a substance whose vapor pressure is 102 torr at 56°C and has a AHvap of 32.1 kJ/mol.
An aqueous solution containing glucose has a vapor pressure of 17.1 torr at 25 degrees C. What would be the vapor pressure of this solution at 45 degrees C? The vapor pressure of pure water is 23.8 torr at 25 degrees C and 71.9 torr at 45 degrees C. If the glucose in the solution were substituted with an equivalent amount (moles) of NaCl what would be the vapor pressure at 45 degrees C?
A certain liquid has a vapor pressure of 92.0 Torr92.0 Torr at 23.0 ∘C23.0 ∘C and 332.0 Torr332.0 Torr at 45.0 ∘C.45.0 ∘C. Calculate the value of ΔH∘vapΔHvap∘ for this liquid. ΔH∘vap=ΔHvap∘= kJ/molkJ/mol Calculate the normal boiling point of this liquid. boiling point
At 20.0°C, the vapor pressure of ethanol is 45.0 torr, and the vapor pressure of methanol is 92.0 torr. What is the vapor pressure at 20.0°C of a solution prepared by mixing 24.0 g methanol and 80.0 g ethanol?