How to Calculate the Molarity of 37% HCl?

  • Thread starter Thread starter violeta
  • Start date Start date
  • Tags Tags
    Calculation Hcl
Click For Summary

Discussion Overview

The discussion revolves around calculating the molarity of a 37% HCl solution with a volume of 2.5L and a molecular weight of 36.46 g/mol. Participants explore the necessary information, such as density, to perform this calculation, while also addressing safety considerations related to handling the chemical.

Discussion Character

  • Homework-related
  • Technical explanation

Main Points Raised

  • One participant seeks to calculate the molarity of a 37% HCl solution but notes the absence of density information on the label.
  • Another participant asks for clarification on whether the desired concentration is molar or molal and suggests looking up the density in a handbook.
  • Safety instructions are reiterated by multiple participants, emphasizing the importance of using a pipet bulb instead of pipetting by mouth and the necessity of working in a fume hood due to the hazardous nature of HCl.

Areas of Agreement / Disagreement

Participants generally agree on the need for density information to calculate molarity, but there is no consensus on the specifics of the label or the exact method to obtain the density.

Contextual Notes

The discussion does not provide specific density values or methods to obtain them, which may limit the ability to calculate molarity accurately. There is also an assumption that the task is laboratory-related rather than for academic credit.

violeta
Messages
7
Reaction score
0
I have 1 bottle of HCL 37% Concentration with 2.5L Volume. Given the MW is 36.46g/mol. How to calculate the molarity of the HCL in the bottle? as i only need to prepare 1M of HCL?

:confused: no density and molarity given in d label
 
Physics news on Phys.org
Was that 1 MOLAR or 1 MOLAL concentration that you wanted to prepare? In case you wanted MOLAR, then you need the density or specific gravity of the HCl 37% solution. Are you permitted to look for this value in a table of values, like in a handbook?

What kind of label do you have? A professional, commercial label from a company? No matter... you can simply look for 37% HCl in a handbook to find the specific gravity of this concentration. I'm assuming that this is a laboratory task and not a question-for-credit task.
 
One more thing: since you had to ask your particular question, and it may be a practical question, DO NOT PIPET BY MOUTH. USE A PIPET BULB. In case you already know this, then please excuse this instruction, since you would use a bulb anyway.
 
symbolipoint said:
One more thing: since you had to ask your particular question, and it may be a practical question, DO NOT PIPET BY MOUTH. USE A PIPET BULB. In case you already know this, then please excuse this instruction, since you would use a bulb anyway.

And use a fume hood. That is above the azeotropic concentration and has a lot HCl pressure
 

Similar threads

Calculating the conductivity of a solution of HCl and HAc
  • · Replies 2 ·
Replies
2
Views
3K
Mg metal reacts with HCl to produce hydrogen gas?
  • · Replies 17 ·
Replies
17
Views
7K
How to prepare 0.1M 200mL HCl Solution using 6M HCl
  • · Replies 2 ·
Replies
2
Views
10K
Finding a rock porosity change after an acid mix treatment
  • · Replies 1 ·
Replies
1
Views
2K
How do I lower the pH of a water supply
  • · Replies 2 ·
Replies
2
Views
3K
Calculating pH with and without ionic strength
  • · Replies 1 ·
Replies
1
Views
2K
How Do You Calculate NaCH3COO Concentration and Predict pH at Equivalence Point?
  • · Replies 4 ·
Replies
4
Views
4K
Chemistry Comparing methods of computing pH at equivalence point in titration
  • · Replies 4 ·
Replies
4
Views
2K
How Can Ammonia Be Used to Adjust the pH of a Highly Acidic Solution?
  • · Replies 11 ·
Replies
11
Views
4K
How Many Grams of HCl Are Needed to React with Iron(II) Sulfide?
  • · Replies 1 ·
Replies
1
Views
2K