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1 Farad is very very large capacitance...
For spherical capacitor, C=r/k
since k=9*10^9, Radius has to be 9*10^9 m
and earth's radius is only 6*10^6m
Therefore it won't have capacitance of 1 Farad
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Actually it's false...
Only in presence of peroxide it adds anti-markownikoff rule.
since there's no peroxide, it will add according to markownikoff rule
to give
CH3CH(Br)CH3
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It's C 7 H 8 O btw...
any answers?
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I'm doing one on casein in milk
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A & B are isomers with formula C7H80. A gives white ppt with Br2 water & violet colour with neutral FeCl3, while B does not. Identify A&B & write the reaction with Br2 water.
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Convert ethanal to 2-hydroxypropanoic acid
(in not more than 5 steps MAX!)
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I think
(CH3)2 C (OH)2
Because CH3 is electron donating and OH is electron withdrawing.....
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CH(CH3)CH(CH3)(Br)
I'm not sure
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Arre.. It can be below 0 or above 14 at room temperature also!!!
See my earlier post it has a link to a source from a SCIENTIST saying that!
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This book contains complete description of all chapters. It explains all the theories and has special 'notes' for extra information. It contains test papers at the end of every 4-5 chapters and has a question bank at the end of EVERY Chapter - one for theory, other one for numericals. An excellent book in my opinion - only thing it is VERY big!
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And on an additional note,
pH can be above 14
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And before anyone disagrees,
I googled it and
"I got a note from Frank Brown gently reminding me that the
first step in the autodissociation of water does not restrict
the pH to be positive. As a result I have gone and done some reading.
My confusion arose from the fact that the autodissociation
of water can be a controlling factor in certain regimes...but
definitely not in the strong acid / strong base regime.
As it turns out, commercial concentrated HCl (37% by weight)
has a pH of approximately -1.1....and saturated NaOH
solution has a pH of about 15.0
So, the answer is, although pH TENDS to range between 1 and 14
for most household chemicals and substances encountered in natural
earth conditions, there is nothing which fundamentally restricts it
to this range even at 25C."
from the site:
http://www.newton.dep.anl.gov/askasci/chem99/chem99230.htm
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Highly concentrated acidic solutions have pH below 0.
So, yes pH can be negative..
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--Question deleted by me-----
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Nice, but tough to read...
Punctuate and make proper sentences for easier reading na??
But amazingly written!
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Excellent, helps a lot thanks!
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Give him time.. Don't fight
Until he says & proves otherwise, believe your own answer (that IF7 2- doesnt exist)
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Me and my friends were trying to solve Irodov.. Me and 3 of my friends gave up, but one guy he has good concepts, he sat 1 hour and finally cracked the problem
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Delta G
= RT LnK
= 2.303 RT Log K
= 2.303 * 8.314 * 300 * log 10
= -5741
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