Table of Contents
Which has lower pH HCl or H2SO4?
In chemistry, both HCl and H2SO4 are strong acids. But what makes the HCl is stronger than H2SO4 is the difference in Basicity of both acids. Thus, decrease in the H+ concentration mean lower the PH value, which greatly reduce H2SO4 ‘s strength than HCL.
What is the pH of H2SO4 and HCl?
pH of Common Acids and Bases
| Acid | Name | 1 mM |
|---|---|---|
| H2SO4 | sulfuric acid | 2.75 |
| HI | hydroiodic acid | 3.01 |
| HBr | hydrobromic acid | 3.01 |
| HCl | hydrochloric acid | 3.01 |
Which acid has least pH value?
From all the above options vinegar has the lowest pH-value that means it is the most acidic from the above and the washing soda is most basic. Hence, the correct option is (b)- vinegar.
Which has higher pH value conc H2SO4 and Dil H2SO4?
The presence of water in dilute sulphuric acid increases the hydrogen ion concentration. Hence it is a stronger acid than concentrated sulphuric acid which contains comparatively less water.
Why does HCl have a higher pH than H2SO4?
HCl is a stronger acid than H2SO4 because a proton more easily separates from chloride ion than from hydrogen sulphate ion and this is reflected in their dissociation constants. The lower the pKa value of an acid the stronger it is.
Is H2SO4 an acid or base?
Sulfuric acid is a very strong acid; in aqueous solutions it ionizes completely to form hydronium ions (H3O+) and hydrogen sulfate ions (HSO4−). In dilute solutions the hydrogen sulfate ions also dissociate, forming more hydronium ions and sulfate ions (SO42−).
Which is the strongest acid HCl or H2SO4?
Generally, both Hydrochloric acid (HCl) and Sulfuric acid (H2SO4) are really strong acids compared to any other acids. However, HCl is stronger than H2SO4. This is mainly due to the difference in the basicity of both acids. Additionally, if we look at the pKa value HCl has a pKa of -6.3 and sulfuric acid has a pKa ~-3.
What is the pH of a solution of h2so4 that has?
pH of sulfuric acid solutions
| Concentration of sulfuric acid in mol dm-3 | pH |
|---|---|
| 1 | -0.301 |
| 0.1 | 0.6989 |
| 0.05 | 1.000 |
| 0.01 | 1.6989 |
Why is HCl a stronger acid than H2SO4?
HCl is a stronger acid than H2SO4 because a proton more easily separates from chloride ion than from hydrogen sulphate ion and this is reflected in their dissociation constants. The lower the pKa value of an acid the stronger it is. The pKa values of HCl and H2SO4 are -6 and -3 , respectively.
Is diprotic H2SO4 more acidic than HCl?
It is true that a dilute solution of diprotic H2SO4 is more acidic , i.e., has a lower pH, than a solution of monoprotic HCl of the same molarity. This does not, however, mean that H2SO4 is a stronger acid than HCl. As already written by Andrew Wolff, the strength of an acid depends on how easily a proton can break away from it.
Why does sulfuric acid have the lowest pH?
Sulfuric acid gives 0.12 M H+ ion concentration which is higher than H + ion concentration of HCl and HNO 3 acid solutions. So lowest pH value is shown by H 2 SO 4 acid due to its dibasic characteristic. Because you know the pH value, you can calculate the H + ion concentration.
Why is the pH of H2SO4 3 a bad approximation?
The deviation from the exact pH is especially acute for the diprotic H 2 SO 4. It was already mentioned above that 3 is a bad approximation. Pitfall. One might expect that the approximation in 2 becomes especially correct for very small concentrations. But the opposite is true, here is a counter example.