<p>I was taking some old Barron's tests and there were a couple of questions about boiling point elevation and freezing point depression. </p>
<p>The answer key dealt with facts like boiling point increases by .51C per mole of particles in 1000 g of water and that depression of 1.86C caused by i mole of particles in 1000g of water.</p>
<p>I never learned that AP chem....</p>
<p>Do you have to know these minute facts?</p>
<p>nooooo- the chem sat2 is not that specific. you just need a general understanding. although it is hard, you do not need to know facts like that</p>
<p>you have to know the consept of ΔT=-kfm and ΔT=kbm</p>
<p>what do you guys think are some difficult concepts/equations that people often forget or never learn?</p>
<p>and can someone explain the 2 equations above?</p>
<p>temp change = (some constant k)(molality)(number of ions formed)</p>
<p>The Barron's book is full of errors -- I've been attempting to use it to review for tomorrow's chemistry test, but it's not particularly helpful. The answer to one question implies that Sulfuric acid is a weak acid.</p>