General Chemistry
General Chemistry Questions & Answers 0th law of thermodynamics - CORRECT ANSWER - if 2 systems are both in thermal equilibrium with a 3rd system, then the 2 initial are in thermal equilibrium with one another - thermal equilibrium = temp stays the SAME - link btwn temp and heat 1st law of thermodynamics - CORRECT ANSWER - total energy in universe is constant - may be transformed BUT NOT created or destroyed - isolated system = constant energy - WORK can be put into a system to increase overall energy (ex. change in temp) 2nd law of thermodynamics - CORRECT ANSWER - ENTROPY (S) = disorder of the universe increases in a spontaneous process -- nature has a tendency to increase disorganization to a max - the greater the disorder = the greater the entropy - randomness increases = S0 - randomness decreases = S0 3rd law of thermodynamics - CORRECT ANSWER - the law that states that in order for motion to stop we have to reach absolute zero - thermal energy is ABSENT - NO randomness to system - lowest achievable temp = 0 kelvin 4 general rules of entropy - CORRECT ANSWER - 1. gas liquid solid 2. particles in solution undissolved solids 3. 2 moles 1 mole 4. S reverse = -S forward 6 Strong Acids - CORRECT ANSWER - HI HBr HCl HClO4 H2SO4
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