Please help with Path

[live]

---

Members don't see this ad.

Hey, I am fighting with the idea of whether I should use Kaplan Review for Path or just stick to NBDE First Aid? Kaplan seems so vast (but I'm sure faily inclusive) but First Aid seems more to the point and laid out better (but maybe lacking sufficient info maybe?) Regardless, I am going back with Decks to quiz myself and fill in little details.

If anyone out there has used these sources could you please give me some direction on which worked best for you and why? Thanks so much and good luck to all!

 

[live]

13 views and no help... Does anyone have any advice?

 

[wadent]

i stduied pathology from nbde first aid its good and straight to the point...👍

pls some one help with this question its very important :


the ph of a solution having a 10-5 M concentration of OH ion is

a.5
b.7
c.9
d.determined if the pka is known

so can some one clear this for me and tell me HOW to answer this question please,, the answer is --------------> 9
can some one tell how the 9 came from ????????

 

[colours99]

First find the pOH, Subtract the pOH from 14.
OH- = 10-5;
pOH = -log [OH-] = -log (10-5) = +5 = pOH
pH = 14 - pOH; pH = 14 - 5 = 9 = pH





If you get a Q abt H+:

Example: If an acid has an H+ concentration of 0.0001 M, find the pH.
Solution:
First convert the number to exponential notation, find the log, then solve the pH equation.
H+ = 0.0001M = 10-4; log of 10-4 = -4;
pH = - log [ H+] = - log (10-4) = - (-4) = +4 = pH
The purpose of the negative sign in the log definition is to give a
positive pH value.

pH Principle: pH and pOH must always equal pKw (14).

 

[wadent]

hey look iam sorry but still didn get it !!!! 🙁

what about the equation : kw=ph+poh
where kw = 14...

is it like 10*14 - 10*5 = 9 ????

its really confusing

 

[Truth seeker]

hey look iam sorry but still didn get it !!!! 🙁

what about the equation : kw=ph+poh
where kw = 14...

is it like 10*14 - 10*5 = 9 ????

its really confusing

its in decks....just get it from there!
hope this helps