What Is the Molarity of 70% TBHP Solution?

  • Thread starter Thread starter amorale
  • Start date Start date
  • Tags Tags
    Molarity
AI Thread Summary
The discussion focuses on calculating the molarity of a 70% TBHP solution, using its density of 0.937 g/mL and a formula weight of 90.12 g/mol. The initial calculation yielded a molarity of 10.4M, but confusion arose regarding the interpretation of the 70% concentration. It was clarified that "molarity of 70%" refers to a weight/weight percentage, leading to a revised calculation of 7.28 mol/L. Participants emphasized the importance of understanding the context of the percentage in relation to molarity. The final consensus indicates that the correct molarity for the 70% TBHP solution is indeed 7.28 mol/L.
amorale
Messages
5
Reaction score
0

Homework Statement


What is the Molarity of 70% TBHP?


Homework Equations


Given: d=.937g/ml, FW=90.12g , w/w%?


The Attempt at a Solution


1000mL x (0.937g/mL) x (1mol/90.12g) = 10.4M

That is what I got but idk what to do with the 70% or that w/w%
or is that right the way I did it?
 
Physics news on Phys.org
"Molarity of 70%" means .7 times one molarity. Do you know what a one molarity solution would be?
 
So this is what I came up with now:

1000mL x (0.937g/mL) x (.7) x (1mol/90.12g) = 7.28mol/L

Is this correct now?
 
If they are asking the molarity and they have given you density, then it is definitely w/w%
 
HallsofIvy said:
"Molarity of 70%" means .7 times one molarity.

No, in this context it means molarity of 70% solution of TBHP, 70% being most likely w/w.
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
View full post »

Thread 'Prove that evolution is constant (Provide at least two arguments to support your position)'

I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...
View full post »

Similar threads

What Is the Molarity of Potassium Ions in a Potassium Sulfite Solution?
Replies
2
Views
4K
A problem in volumetric calculations in Chemistry
Replies
2
Views
2K
Molality calculation.... Is it correct?
Replies
12
Views
8K
What is the molality of 1M NH4OH in 70.092ml of water?
Replies
10
Views
3K
What is the Importance of Choosing the Correct Endpoint in a Titration?
Replies
7
Views
4K
Chemistry Finding the molecular formula of an unknown hydrocarbon
Replies
4
Views
3K
Concentration from density and purity
Replies
3
Views
4K
Find the amount of O2 the blood absorbs in the lung
Replies
1
Views
1K
Finding volume of one compound using Stoichiometry equation
Replies
2
Views
2K
Calculating Molarity for a Diluted Ethanol Solution - Quick Dilution Question
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top