Can Vinegar and Sulfuric Acid Solutions Share the Same pH?

[jammon]

Hi there, I was wondering if anyone could help me with 3 questions:

1) Without pH papers, how do you calculate the pH of a 5% H2SO4 (sulfuric acid) solution?
I know vinegar is a weak acid, but would a 5% acetic acid have the same pH of a %5 H2So4 solution?

2) If a non-polar solvent such as Hexane is miscible with Ethanol, does that mean that they mix completely? If so, would the water traces from the alcohol stay at the bottom below the Hexane layer?

3) H202 (Hydrogen peroxide) is an oxidizing agent just like Permanganate. I need to replace the later, is it possible to dilute or concentrate Peroxide in order to make it work like Permanganate?
Besides one begin stronger than the other, what other differences are there between these oxidizing agents?

Thanks

 

[jammon]

gee 300 views and no one has a clue on this school chemistry?
and it's not homework, just something I've always wondered

 

[sjb-2812]

Seems to be a reasonable discussion at http://www.chemicalforums.com/index.php?topic=56004 , for instance?

 

[jammon]

Thank you

 

[DeeNos]

Hello there, I am happy to assist you with your questions about solutions and pH.

1) Without pH papers, there are a few methods you can use to calculate the pH of a 5% H2SO4 solution. One way is to use a pH meter, which measures the hydrogen ion concentration in a solution and gives a direct reading of the pH. Another method is to use indicators, such as litmus paper or universal indicator solution, which change color based on the pH of the solution. You can also use a titration method, where you add a known amount of a base solution (such as sodium hydroxide) to the sulfuric acid until the solution reaches a neutral pH, and then use that amount to calculate the original concentration of the acid. As for your question about vinegar and sulfuric acid having the same pH, the pH of a solution depends on its concentration and strength of the acid, so a 5% acetic acid solution may not have the same pH as a 5% sulfuric acid solution.

2) If a solvent is miscible with another solvent, it means that they can mix together in any proportion. So, yes, if hexane and ethanol are miscible, they will mix completely. Water traces from the alcohol will likely stay at the bottom below the hexane layer, as water is more dense than hexane.

3) While both hydrogen peroxide and permanganate are oxidizing agents, they have different properties and uses. Diluting or concentrating hydrogen peroxide will not make it work exactly like permanganate, as the reaction mechanisms and products may be different. Some differences between these oxidizing agents include their stability, reactivity, and selectivity for different types of reactions.

I hope this helps answer your questions. If you need further clarification or assistance, please let me know. Good luck with your studies!