calculate the heat of vaporization given trendline equation in excel

We can further work our the integration and find the how the equilibrium vapor pressure changes with temperature: ln(P2 P1) Hvap molar R 1 T2 1 T1 Thus if we know the molar enthalpy of vaporization we can predict the vapor lines in the diagram. That's why the difference between heat of vaporization at 25C (energy required to break all H-bonds between 1 gram of initially slow moving molecules) and at 100C (energy to break all H-bonds of 1 gram of fast molecules) is LESS then the energy required to make all of those 1 gram of molecules faster. DeltaHo - TDeltaSo 0 at Equilibrium (i.e., boiling point) and T is the Thermodynamic Boiling Point for the phase transition. Equation 23.4.1 is known as the Clausius-Clapeyron equation. Use of Exponential Trendline Equation in Excel to Find the Coefficients 6. Employing Linear Trendline Equation in Excel to Find Slope and Intercept 5. The TREND function takes four arguments: TREND(knowny’s, knownx’s, newx’s, const) Where, knowny’s and knownx’s refer to the x and y data in your data table, newx’s is an array of data points you wish to predict the y-value for and const is a binary argument for calculating the y-intercept normally, or forcing the value to 0. Use of Trendline Equation in Excel to Get Values for Any Given X 4.

And as more molecules fly off, less energy is needed to break off the remaining bonds. Using Trendline Equation in Excel to Forecast Data 3. We’ll need a trendline on our chart to figure out the trendline equation. It occurs more and more as you near towards it. Step-by-Step Procedures to Add Trendline Equation in Excel. You don't need to wait until 100 degrees for vaporization to begin. Remember that when you apply energy to water, some of it will increase the avg kinetic energy of the molecules (related to the temperature) and some will be spent to break off all hydrogen bonding and send the molecules flying away (related to heat of vaporization at a GIVEN temperature). Specific heat, heat of vaporization, and density of water qmC(delta)T vs. How come only 40 calories can increase the water temperature by 75 degrees to its boiling point, if the specific heat property tells us that 40 calories can only increase it by 40 degrees?

Calculate the heat of vaporization given trendline equation in excel