2 votes

Is it possible to calculate the theoretical rate of reaction?

It is always possible to postulate a kinetic rate law and test it. The chemical reaction in this case is $$ \ce{CaCO3(s) + 2H+(aq) -> Ca^{2+}(aq) + H2O(l) + CO2(g)} \tag{1} $$ and the statement of ...
Metal Storm's user avatar
  • 3,036
2 votes

pH in a buffer of Glycin and HCl

Glycine in aqueous neutral solution (i.e. add water to glycine) occurs as zwitter ion: The $\mathrm{p}K_\mathrm{a}$ of the ammonium group is 9.6. The $\mathrm{p}K_\mathrm{a}$ of the carboxylic acid ...
Karsten's user avatar
  • 40.2k
1 vote

How does the concentration of H+ ions in HCl change as the pH changes?

What is the concentration of H+ ions in a solution of hydrochloric acid with pH 2.5? Using the definition of pH $= -\log(\frac{[\ce{H+}]}{\pu{1 mol L-1}})$, you can easily calculate this as long as ...
Karsten's user avatar
  • 40.2k
1 vote

Reaction between copper rod and carbon rod in hydrochloric acid

If no air and no oxygen gas is involved in this system, there is no reaction : copper should not react. If oxygen $\ce{O2}$ is present (for example in solution), the reaction proposed by Poutnik ...
Maurice's user avatar
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1 vote

Reaction between copper rod and carbon rod in hydrochloric acid

The carbon as an inert electrode can serve as the conductor for an oxygen electrode due dissolved aerial oxygen. But the reaction $$\ce{2 Cu(s) + 4 H+(aq) + O2(aq) -> 2 Cu^2+(aq) + 2 H2O(l)}$$ ...
Poutnik's user avatar
  • 41.3k
1 vote
Accepted

Hydrogen–deuterium exchange in 1,4-benzoquinone

It requires a lot of energy to remove the hydrogen atoms from the $sp^2$ hybdridised carbon atoms (involved in double bonding). So there's not really any hydrogen atom which is readily available for ...
afrin's user avatar
  • 72

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