Qualification > Sciences

chemistry questions..hope u all stop by :)

<< < (2/5) > >>

AS-Girl:
got it! thanks :)

one more question :/

AS-Girl:
1) How many ions per formula unit would you find if you dissolve (NH4)2 [Ce(NO3)6] in water?
a) 3    b) 9   C) 2    d)6

AS-Girl:
If the pH of juice is 1.80, then the hydrogen ion concentration [H+] of the juice is:
a) 1.00 X10^-2 mole/liter
b)1.80 X 10^-2 mole/liter
c) 6.31 X10^-2 mole/liter
d) 1.58 X10^-2 mole/ liter


what i did is replaced all the values given  in the equation pH= -log[H+] and (d) gave me exactly 1.8


but surprisingly, the answer is (c)  :-\

any ideas guys?

Amii:
Are you sure the answer is C ? I get D too  :-\

AS-Girl:

--- Quote from: Amii on April 06, 2011, 02:34:00 pm ---Are you sure the answer is C ? I get D too  :-\

--- End quote ---

yes..it's from an official paper  :-\

Navigation

[0] Message Index

[#] Next page

[*] Previous page