SAT II Chemistry Help?
December 5th, 2009 | 
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Posted in sat questions | 
Tags: booklet pdf, chemistry section, counselors, pdf file, prod, subject tests
Hi and welcome to my blog,
I opened this blog to help anyone who is preparing for his SAT.
I remember myself when I started - I was so lost and in such a panic.
Luckily I got this great SAT guide that helped me a lot . So study hard and good luck!
Can someone explain the answers to 104, 12, 13 on the Chemistry Section of the PDF file
pages 29-32
http://www.collegeboard.com/prod_downloads/prof/counselors/tests/sat/2006-07-SAT-subject-tests-preparation-booklet.pdf
Why isn’t #12 D, and why isn’t #13 C
Thanks
Posted in sat questions |
Tags: booklet pdf, chemistry section, counselors, pdf file, prod, subject tests
12: Answer should be C because there are currently 3 I’s on the right side–1 in CuI and 2 in I2–so putting a coefficient of 3 in front of the I- makes it balanced.
However, the answer they have is D, and this is due to a typo: the first product should read CuI2.
13: The answer is C. I is true because atmospheric pressure is the only pressure acting on the right side’s surface. II is true because h is positive.
104: First statement is true because the reaction, say, Zn + CuCl2 > ZnCl2 + Cu proceeds in the forward reaction, reducing Cu from 2+ to 0 (atomic). The reason that this happens is that Zn is an active metal whereas Cu is unreactive, (Zn is higher in the activity series) so Zn will replace Cu in solution. Therefore, second statement is true, and CE is also applicable.