Post by: Cappuccinos on January 13, 2011, 07:48:01 pm
d) 157.3g of Sodium Hyrdoxide
But the book tells me I'm wrong :tickedoff: (says 3.983?!) Why?
AND Does anyone have the worked answers for StudyOn Chemistry 2? (I can only find ones for heinamann >.<) If so, could you please upload it or something? Because the answers at the back of the book don't seem to reliable :-\ Thanks a million! :angel:
Post by: Cappuccinos on January 13, 2011, 08:14:32 pm
Studyon is quite a good book, but the solutions can be wrong at times. If I recall correctly, they are mainly the minor calculation errors. No need to fuss too much over them.
With regard to your request for worked solutions, its attached with this post~ :)
Thank you so so so so so so much for the worked solutions!! :D I'd Karma, but i don't know how :-[
And yep, I just checked the answer for this question in the worked solutions, and it's right! (well I just gotta round my answer) .
I thought it was wrong due to sig figs or something, but yeah.
Thank you again!! :)
Post by: Cappuccinos on March 08, 2011, 07:04:09 pm
A bottle of ‘Wunda White’ bleach lists the following as its active ingredients: sodium hypochlorite, NaOCl,
40 g/L; sodium hydroxide, NaOH, 9 g/L. A chemist wishes to check both these claims using volumetric analysis.
9. NaOCl reacts as an oxidant. To check the sodium hypochlorite claim, the bleach should be reacted with:
A
B
C
D NaOH solution.
The answer is B....