<p>CCl4 </p>
<p>NaCl is ionic and is soluble in polar solvents, but CCl4 is the only nonpolar solvent on the list.</p>
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</p>
<p>CCl4.
I’m not even going to take the chem test on Tues. Got to go back to study for Bio. :)</p>
<p>In the elctroplating of nickel, 0.2 faraday of electrical charge is passed through a solution of NiSO4, what’s the mass of nickel is deposited?</p>
<p>Can someone answer my question (which solubility rules do we need to know?)</p>
<p>For the most part, you should know all the solubility rules. I think the easiest ones to remember are the nitrates, sulfates, and carbonates. Those appear a lot on the reaction predictions.</p>
<p>[Solubility</a> Table](<a href=“http://intro.chem.okstate.edu/1515SP01/Database/Solub.html]Solubility”>Solubility Table)</p>
<p>memorize this</p>
<p>for the electroplating question</p>
<p>Ni+2 +2e –> Ni(s)</p>
<p>.2 faraday = .2mol e-(1 mol Ni/2 mol e-)= .1 mol*(molar mass of Ni) which is 58.7 so 5.87g</p>
<p>So 0.2 faraday of electrical charge means 0.2 moles of e-?</p>
<p>yes it does</p>
<p>NaCl is LEAST soluable in which of the following? </p>
<p>CCl4</p>
<p>This has the most Common Ions. The more common ions, the less soluable.</p>
<p>for that faraday question, is that the only way to solve it? is it possible to solve using deltaG=-nFe, and if so, how do you find delta G?</p>
<p>Also–What ions and their corresponding colors are important to know?
All I know right now are the following:
Cu2+ Blue
Co2+ Pink
Cr2+ Blue
MnO4-2 Purple
Mn2+ Light Pink
CrO4-2 Yellow
Cr2O7-2 orange</p>
<p>Are there any others that you know of that are important?</p>
<p>What are frequent/most common topics on the MC? The MC is giving me more trouble than the FRQ, which is pretty standardized.</p>
<p>Based on what my review books tell me, the most common/important topics are Bonding, Reactions, Solutions, and Acids/Bases</p>
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</p>
<p>Alkali metals and NO3- are soluble. Pb & Hg are almost never soluble. This will answer most of the solubility questions.</p>
<p>How do you solve titration problems at and past the equivalence point? I know you can only use the H-H equation before it reaches equivalence.</p>
<p>Also, if I get a 60 raw score how much do you think I’ll need on the FR? 60%? 70%?</p>
<p>what is the test out of? I saw 160 before, but that would mean the MC needs to be multiplied by something. That would be sweet.</p>
<p>and the FR’s are weird… different scoring for every fr… </p>
<p>does anyone have an idea?</p>
<p>after equivalence you usually just worry about the strong acid or base since the affects the pH more than the salt</p>
<p>"Based on what my review books tell me, the most common/important topics are Bonding, Reactions, Solutions, and Acids/Bases "</p>
<p>I think that’s pretty accurate, except on all of the practice tests I’ve only seen maybe a max of two reaction questions out of 75 of them. I’m thinking more along the lines of Bonding, Solutions, Acid/Base, stoichemetry, and some atomic theory, right?</p>
<p>Try to aim for 70% or more on both the FRQ and MC, then it’ll be a pretty safe bet for a 5 I think.</p>
<p>can someone explain buffers to me? How do they work, and how will I know which substances would be good buffers in certain solutions of specified pH?</p>
<p>thanks</p>
<p>Good buffer is usually a weak acid and its conjugate.</p>
<p>What percent FRQ to get a 3 at least if you’re getting around a 40/75 in MC?
Also, do we have to balance the net ionic equations on Q1 in Part B?
Guesses on FRQ (esp. the lab question) this year? I’m definitely thinking titration. And hopefully periodicity. lol</p>