determine Delta H soln from 4.3g of CaCl2 and a temperature change of 16C?
The sign of delta H does not change. The sign of delta H changes. What effect does this change have on delta H: multiplying the coefficients of the equation for the reaction by 27 The magnitude of delta H halves. The magnitude of delta H doubles. The magnitude of delta H does not change.
What is the meaning of delta H (change in enthalpy), delta S (change in entropy) and delta G (change in Gibbs free energy) as it relates to mixing two liquids together? In what situations is each of these variables negative/positive?
Question 5 The spontaneity of a reaction depends both on the enthalpy change, Delta H, and entropy change, Delta S. Reactions that release energy produce more stable products, and the universe tends toward disorder. Thus, an exothermic reaction with a positive entropy change will always be spontaneous. Mathematically, this relationship can be represented as where Delta G is the change in Gibbs free energy and T is the Kelvin temperature. If Delta G is negative, then the reaction is spontaneous....
A 10g Licl with initial temperature of 20 degrees and delta H is -34.4kJ/mol, was added to 100g of water with a temperature of of 20 degrees. after Licl is added to water, the mixture has a final temperature of 37.63 degrees. what mass of licl is needed to change the temperature of 100g water from 20 degrees to 40 degrees? report the answer in grams.
From the values of delta H and delta S, predict which of the following reactions would be spontaneous at 26C: Reaction A: delta H = 10.5 kJ/mol, delta S = 30.0 J/K*mol Reaction B: delta H = 1.8 kJ/mol, delta S = -113 J/K*mol If either of the reactions is nonspontaneous, can it (they) become spontaneous? If either of the reactions is nonspontaneous but can become spontaneous, at what temperature might it become spontaneous? Please explain how to do this!
Determine the ethalpy of reaction, delta H, for the formation of tungsten carbide, WC, from the elements. W(s) + C(graphite) = WC (s) The heats of combustion of the elements and of tungsten carbide are: 2 W(s) + 3 O2 (g) = 2 WO3 (s); delta H = -1685.8 KJ C (graphite) + O2 (g) = CO2 (g); delta H = -393.5 KJ 2WC (s) + 5 O2 (g) = 2 WO3 (s) + 2 CO2 (g); delta H =...
Calculate the enthalpy change, Delta H process in which 32.5 g water is converted from liquid at 18.9 C to vapor 25.0 degrees C. For water Delta H vap =44.0 kJ/mol at 25.0 °C and Cs=4.18 J/(g*^ C) for H2O (l)
Here are the delta H,
delta S and delta G values from my textbook: (first value is delta
H, second value is delta S, third is delta G)
CO2: -393.5 , 213.6 , -394.4
CH4: -75, 186, -51
CO : -110.5 , 197.9 , -137.3
CH3COOH : -484.2 , 159.8 , -389.45
CH3OH : -238 , 126.8 , -166.3
Q3. Using the thermodynamics data given in the appendix, calculate ΔH·AS) and ΔG, for the following reactions that produce acetic acid:...
Use your data from table 8-3 to determine delta H solution for
your unknown salt.
I've tried a few different
things but can't seem to come up with the right answers
Question #4 One way to limit the choices for your unknown is to consider the sign of AHSoln: Considering your results from Table 8-3 and the table of heats of solution provided below, which of the following are possibilities for your salt considering only the sign? mass of solid...
At a given temperature and pressure, how does the magnitude of delta H- vaporization of a water compare to the delta H-condensation? Begin by writing the balanced chemical equation for water undergoing condensation or for water undergoing evaporation.