Chemistry - April 2007

I made a buffer today of 1M MOBS and made it pH 7.0 by adding KOH. When I diluted it to 10 mM, the pH was 6.1. At 50 mM the pH was 6.5. Any suggestions?

2007-04-05 16:59:17 · 4 answers · asked by chemsf 1

Why are some alcohols soluble in water whereas others are not?

How is the SOLUBILITY of carboxylic acids affected by the addition of base and/or acid?

How does lemon juice remove the odor of fish?

2007-04-05 16:17:08 · 3 answers · asked by swimmer4tc06 2

FeCl3 + KBr ---> ???

Specifically, I need to know which halogen is formed. I did a lab in which I THINK Cl2 was indicated as the halogen formed. But isn't Cl2 a better oxidizing agent than KBr? So why would Cl2 be formed rather than Br2? Am I wrong about something?

2007-04-05 16:14:43 · 2 answers · asked by Professor 1

2007-04-05 16:07:49 · 12 answers · asked by Kyle V 1

I have a chemistry test tomorrow, and one of our objectives is to apply LeChatelier's Principle to Haber's Process. I'm having a difficult time trying to do that. Can anyone help me please? ^-^

2007-04-05 16:04:17 · 2 answers · asked by Anonymous

In my chemistry class we are having a competition on who can build the highest voltage batter. Can someone please tell me how to make a high voltage battery. Everywhere i go to find out what chemicals to use they say Ni and Cu and that only has a volatge of 1.00V. Pleaaaaasseee someone help me!!!!!!!!!!!

2007-04-05 15:58:46 · 2 answers · asked by bnayscs 1

2007-04-05 15:39:17 · 5 answers · asked by aaron i 1

What halogen is formed when:

(1) You mix FeCl3 and KI (heat this as well)
(2) You mix FeCl3 and KBr (heat this as well)

I believe when this was tested I2 was indicated in (1) and Cl2 was indicated in (2). But in (2) this seems to go against the fact that Cl2 is a better oxidizing agent than Br2 (i.e., shouldn't Br2 be indicated b/c Cl2 will be reduced?). Can someone tell me what is wrong here? Can someone give me the balanced net ionic equations? I need to know exactly why Cl2 is formed in (2) rather than Br2, when Cl2 is a better oxidizing agent? PLEASE ANSWER THE LAST QUESTION ESPECIALLY

2007-04-05 15:38:25 · 1 answers · asked by Professor 1

2007-04-05 15:34:42 · 1 answers · asked by Random G 3

i need this for my chem. class...
example for element Arsentic: Arsentic's a sure fire way to deal with a nasty rat, It works better than a mean old cat!
Ofcourse i need my slogan for Lead..
Can anyone PLEASE HELP!.. thank you soo much!

2007-04-05 15:18:48 · 4 answers · asked by Anonymous

What happens? Do waves just occur or something else?

2007-04-05 15:13:39 · 3 answers · asked by thunderbomb90 3

2007-04-05 15:03:00 · 1 answers · asked by Aaron 1

2007-04-05 15:00:06 · 1 answers · asked by Random G 3

Equal volumes of diatomic gases under the same conditions of temperature and pressure contain the same number of
a. protons
b. ions
c. molecules
d. Dalton's "ultimate particles"

2007-04-05 14:23:32 · 2 answers · asked by studentlearner 2

2007-04-05 14:21:56 · 1 answers · asked by sochn9022jkl 1

Pt(s) | Na+(aq), OH-(aq) | Pt(s)

For my final answer I get 3.11V but the ans key says1.23V

2007-04-05 13:37:49 · 2 answers · asked by chocochococharm 1

2007-04-05 13:17:56 · 1 answers · asked by theweirdguy1 2

I really tried and I may have it right, but I am not sure. Here is the problem:

AlCl3 + AgNO3

2007-04-05 12:54:49 · 7 answers · asked by Holy Macaroni! 6

At 35°C, K = 1.6 x10^-5 mol/L for the following reaction.

2 NOCl(g) <--> 2 NO(g) + Cl2(g)

Calculate the concentrations of all species at equilibrium for each of the following original mixtures.

(a) 2.4 mol of NO and 1.2 mol of Cl2 in a 1.0 L flask
(b) 1.4 mol of NOCl and 1.4 mol of NO in a 1.0 L flask
(c) 2.8 mol of NOCl, 2.8 mol of NO, and 1.4 mol of Cl2 in a 1.0 L flask
(d) 1.9 mol/L concentration of all three gases
(e) 3.2 mol of NO and 1.1 mol of Cl2 in a 1.0 L flask

Can anyone explain to me how to do these problems?

2007-04-05 11:59:58 · 3 answers · asked by Beri 1

these are some of the questions i am having a hard time finding...thanx much!!!


how did cobalt get its symbol?

where can cobalt be found? (in what countries, in its pure form or in compunds)


how was cobalt discoverd?


physical properties? chemical?


what is cobalt used for?


im asking these questions because i am getting different answers everytime i search so.....yeah! thanks so much for ur time and efforts!

2007-04-05 11:49:14 · 2 answers · asked by CrazyCatGirl 2

2007-04-05 11:41:12 · 4 answers · asked by Mattman 6

2007-04-05 11:12:33 · 8 answers · asked by Anonymous

i have notes down about factors that affect the rate of chemical reaction.. and its things like
change in concentration (for collisions)
increase temp (for effective collisions)

whats the difference

2007-04-05 11:11:29 · 2 answers · asked by strawberry 1

2007-04-05 11:10:26 · 1 answers · asked by Anonymous

2007-04-05 09:16:16 · 5 answers · asked by Anonymous

A buffer is 0.36 M in HNO2 and 0.21 M in NaNO2. If the ionization constant of HNO2 is 4.5 x 10^ -4, calculate the pH of the buffer.

2007-04-05 08:59:30 · 3 answers · asked by michiusa 1

2007-04-05 08:58:24 · 2 answers · asked by W 1

-solutions
-acid/base reactions
-gas laws
-density
....help!

2007-04-05 08:47:02 · 2 answers · asked by Anonymous

i believe its mw = 786.36

2007-04-05 08:40:46 · 3 answers · asked by alex 1

And, also, what does it mean when a reaction has a small value of K (K<1)?

Thanks in advance for the help.

2007-04-05 08:29:51 · 4 answers · asked by W 1