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Why is dilute h2so4 most suitable as compared to hcl and hno3 in kmno4 titrarion?
Dilute H2SO4 is preferred over HCl and HNO3 in KMnO4 titrations because H2SO4 does not oxidize the Mn present in KMnO4, maintaining its stability. On the other hand, HCl and HNO3 can oxidize Mn in KMnO4, interfering with the titration results. Additionally, H2SO4 helps to acidify the solution and provide the necessary hydrogen ions for the reduction-oxidation reaction to proceed effectively.
How do you make 80N H2SO4 solution from 98 percent acid?
You'll never reach that because 98% H2SO4 is of lower normality: max. 37 N Density 1840 g solution / L solution Molar mass 98 g/mol H2SO4 concentration 980 gH2SO4 / 1000g solution H2SO4 2 equivalent H+/mol H2SO4 All together making: [1840*(980/1000) / 98 ] * 2 = 36.8N H2SO4 Or the other way 'round: 80N = 40M = 40*98(g/mol) = 3920 gH2SO4/L = 3920/(98*100) = 4000 g (solution)/L , which is more than the most concentrated H2SO4 solution can weight
Is sulfuric acid dangerous to living organisims?
There are some bacteria that thrive in sulfuric acid but most living organisms are severely damaged by H2SO4
Why shouldn't dilute acid be added to the most reactive metals?
Dilute acid should not be added to reactive metals because the result is dangerous. This violent reaction can easily cause damage to property or cause harm to people.
What dissolves in dilute sulfuric acid producing a conducting solution and a flammable gas?
my guess would be silver... flammable gas would be the pure oxygen released during the chemical reaction. Dilute H2SO4 will react with most metals and usually by a single displacement that causes the release of hydrogen gas (flammable). Iron is a good expamle as well, zinc, aluminum, magnesium. Silver will react with concentrated sulfuric acid but maybe not dillute (depends on concentration), also you will get SO2 which is not flammable like Hydrogen gas.
Why do you start with the most dilute solution and measure in order of increasing concentration?
You do this in order to minimize error due to imperfect rinsing. If you start with a high concentration and work your way down, you may transfer concentrated solution to the lower concentrated solution.
When do you say chemicals are harmful and beneficial to your environment?
The most important is the concentration; any chemical can be dangerous if a specified limit is exceeded.
How much water will there be in a dilute acid?
Almost amount of water can be used. The amount you use depends on what purpose the solution will serve. Most dilutions involve using at least as much water as you have of the acid or base, often several times that amount.
Which is more acidic in HCl HNO3 H2SO4 and why?
H2SO4 is more acidic if you have equal molar quantities and the same volume for each (ie. Concentration) as it's diprotic . so for example a solution containing 1moldm-3 of H2SO4 has a [H+]of 2moldm-3 whereas HCL and HNO3 have will have a [H+] of 1moldm-3. [H+] is the concentration of hydrogen ions in a solution and [h+] is a measure of acidity as [H+]=10-ph or rearranged Ph=-log[H+]
Why does the most dilute solution deposit more copper in electrolysis?
An electrolysis process is based upon movement and flow of ions. More is the solution dilute, more is the movement of ions and more is the conductance of solution. Thus, when the solution is dilute more copper ions flow to the electrode and get deposited there
If zinc is first added to dilute sulfuric acid then concentrated sulfuric acid and acetic acid in which case will the fizzing be most and least?
The most fizzing will come from the concentrated sulfuric acid, then dilute sulfuric acid, then the acetic acid.The amount of fizzing is due to the concentration of H+ in the solution, and concentrated sulfuric acid has the most H+ in solution. The dilute sulfuric acid has less (because it is dilute) and the acetic acid solution has the least of all because it is a weak acid rather than a strong acid.See the Related Questions for more information.
What is a pH of zero?
It represents a hydrogen ion concentration of 100, or 1 mole per liter. Any strong acid at 1N concentration will have a pH of around zero.Note that in the parlance of chemists, 1N is weaker than the stock "dilute" concentration.
