Oct 1, 2022 · $\begingroup$ Note that the simplified formula [H+]=sqrt(Ka.c) for pH of monoprotic acid assumes [H2S]>>[HS-]=[H+]. Check, if deviations are acceptable, before accepting the …

May 15, 2019 · The pH of a mixture of $\ce{H2S}$ solution with $\ce{HCl}$ solution is about the same as the corresponding mixture of water with $\ce{HCl}$ solution. The reason is that …

Hydrogen sulfide is actually relatively strongly soluble in water compared with other low-polarity gases. In Earth Science SE, this answer explains that water-ice hydrates are most likely to be …

Jun 22, 2021 · $\begingroup$ Second pKa of H2S is much lower than that and even if this value was correct, it should still be ignored. $\endgroup$ – Mithoron Commented Jun 22, 2021 at 22:27

Dec 15, 2023 · $\ce{Cd^2+}$ and $\ce{Fe^2+}$ (starting concentration $\pu{E-3 mol/L}$) should be separated by precipitation using $\ce{H2S}$. Does a pH range exist allowing to completely …

Jan 5, 2019 · Consider simply aqueous solutions of $\ce{H2S}$ and $\ce{HCl}$. It is pretty much known that $\ce{HCl}$ is stronger than $\ce{H2S}$ in water. The reason behind that first is the …

Nov 9, 2020 · Neutral-Acid pH: $\ce{3 H2S + 2 KMnO4 → 3S + 2 MnO2 }$ Wikipedia on KMnO4 supports this pH effect, to quote: The Mn-containing products from redox reactions depend on …

To actually find the pH of a diprotic acid, you either assume that the first dissociation goes to completion or that the second dissociation is too weak to occur. In general, a large K a1 value …

Jan 20, 2016 · Usually, these substances do not significantly affect the pH of the water. However, when the air contains large amounts of pollutants, such as sulfur dioxide or nitrogen oxides …

$$\ce{S^2- + 2H2O <=> H2S + 2OH-}$$ This forward shift in equilibrium decreases the concentration of sulphide ions in the solution and thus helps in increasing the solubility of the …