10 votes
Accepted

What is the hydrated diameter of a lithium ion?

The data you share (source of the table?) are poor; neither is there a reference what the author considers as hydrated cation -- because different coordination geometries require different volume, nor ...
Buttonwood's user avatar
  • 29.1k
6 votes
Accepted

My textbook writes hydronium ion as [H(H2O)]+, is this correct?

In water solution context, it is recommended and preferred to use $\ce{H+(aq)}$, as products of proton interaction with water are complex and still subject of research. $\ce{[H(H2O)]+}$ would be ...
Poutnik's user avatar
  • 40.8k
5 votes

In an unsaturated solution, is the product of ions still equal to Ksp?

No. In this case the product of concentrations will be less than $K_{sp}$. $K_{sp}$ denotes the product of the concentration of the solute that has dissolved when the solution is saturated.
Aarush Saharan's user avatar
3 votes
Accepted

Why does balancing the reduction of dichromate(VI) to chromium(III) require four water molecules among the products?

$$\ce{Cr2O7^2–(aq) + 3 HNO2(aq) + 5 H+(aq) -> 2 Cr^3+(aq) + 3 NO3–(aq) + 4 H2O} $$ The left side has $1\cdot7 + 3\cdot2 = 13$ oxygen atoms and $3\cdot1 + 5\cdot1 = 8$ hydrogen atoms. The right side ...
Karsten's user avatar
  • 39.8k
2 votes
Accepted

Why does balancing the oxidation of dichromate(VI) to chromium(III) require six iron atoms?

I would like to go back to your original demand. On the first line, there was a title : "The problem". The second line is : "Balance the chemical equation using oxidation numbers". ...
Maurice's user avatar
  • 28.1k
2 votes

My textbook writes hydronium ion as [H(H2O)]+, is this correct?

$\ce{H3O+}$ does not exist in aqueous solution outside text books Due to the strong hydrogen bonds the species is better described as a mixture of $\ce{H5O2+}$, $\ce{H19O9+}$ or maybe $\ce{H37O18+}$ (...
Stian's user avatar
  • 2,795
1 vote

Solubility of hydrogen

If hydrogen $\ce{H2}$ is an end product in solution, it will soon produce gas bubbles, as the solubility of hydrogen is low : $\pu{1.5 10^{-4}}$ g in $100$ mL at room temperature. This is not affected ...
Maurice's user avatar
  • 28.1k
1 vote

Soluble Ion separation

Ions can be separated by a strong electric field of even by mechanical action. Examples are static electricity, lightning, both are recombination of separated ions recombining by a cascade mechanism. ...
jimchmst's user avatar
  • 2,027

Only top scored, non community-wiki answers of a minimum length are eligible