Αποτελέσματα Αναζήτησης
Worksheet on Entropy and Free Energy. Define entropy in your own words, and list the variables or conditions that you must consider when comparing the entropy of two substances, or when trying to determine the relative change in entropy.
- Worksheet on Entropy - Mr. Eagen's Science Classroom
Define entropy in your own words, and list the variables or...
- Worksheet on Entropy - Mr. Eagen's Science Classroom
1. Calculate the change in entropy of a large vat of molten copper when 50 J of energy is removed reversible from it as heat at 1100 °C. 2. Calculate the change in entropy of 1.0 L of water at 0 °C when it absorbs 235 J of energy from a heater.
Calculate the change in entropy of the surroundings when water freezes at −10.°C; use ΔHfus(H2O) = 6.0 kJ·mol−1 at −10.°C. Answer: We can expect the entropy of the surroundings to increase when water freezes because the heat released stirs up the thermal motion of the atoms in the surroundings.
Define entropy in your own words, and list the variables or conditions that you must consider when comparing the entropy of two substances, or when trying to determine the relative change in entropy.
The symbol for change in entropy is ∆S. Solids are very ordered and have low entropy. Liquids and aqueous ions have more entropy because they move about more freely, and gases have an even larger amount of entropy. According to the Second Law of Thermodynamics, nature is always proceeding to a state of higher entropy. Also, when
Exercise 1 Predicting Entropy Changes Predict the sign of the entropy change for each of the following processes. Justify your answers. a) Solid sugar is added to water to form a solution. b) Iodine vapor condenses on a cold surface to form crystals. Calculating Entropy from tables of standard values:
Entropy Worksheet. Define entropy in your own words, and list the variables or conditions that you must consider when comparing the entropy of two substances, or when trying to determine the relative change in entropy.
