What general rules apply to predicting whether an entropy change is negative or positive

Predict the sign of DG for an exothermic reaction with an increase in entropy. positive O negative no change cannot predict without additional information

What happens to the entropy of a sample of the matter when it changes state from a solid to a liquid? From a liquid to a gas?

- Chapter 9 and 18 - Thermodynamics Exercise 18.36 Enhanced with Feedback and Hints Without doing any calculations, determine the sign of ASsys for each of the following chemical reactions. Drag the appropriate items to their respective bins. • View Available Hint(s) Reset Help CH4(g) + 202(g)→ CO2(g) + 2H2O(1) 203(g) → 302(g) SO3(g) + H2O(1)→H2SO4(1) Mg(s) + Cl2 (g) → MgCl2 (s) ASsy greater than 0 ASy smaller than 0

Which of the following definitions correlate to the term nonspontaneous process? O Change in entropy for a reaction calculated using the standard entropies Process that takes place without a continuous input of energy from an external source Possible configuration or arrangement of matter and energy within a system O Process that requires continual input of energy from an external source

Do you need to specify the temperature to calculate the entropy change? Explain.

Explain each of the Laws of Thermodynamics and to which law would Entropy and Enthalpy apply. Thank you!

When a liquid freezes, its entropy increases: true or false?

All spontaneous changes cause an increase in the entropy of the universe. True False

Number 7 please