# Tag Info

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### How is 1 mole hypochlorite ion equivalent to 1 mole chlorine gas?

You will find the "equivalency" relations in many classical volumetric or gravimetric analysis. Active chlorine and active oxygen are such representative terms; these terms are academically ...
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### How is 1 mole hypochlorite ion equivalent to 1 mole chlorine gas?

If we consider reaction $$\ce{ClO- + Cl- + 2 H+ -> H2O + Cl2},$$ there is 1:1 ratio, 1 $\ce{ClO-}$ is equivalent to 1 $\ce{Cl2}$. The equivalence does not mean the atom counts must match, as they ...
• 27.2k
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### Should I write formula for oxalate or oxalic acid while balancing a redox reaction using the ion-electron method?

One should report the species which is the most important one in the given system. As oxalic acid has two $\mathrm{p}K_\mathrm{a}$ values ($1.23$, and $4.19$), it means that you should report the ...
• 20.7k
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### Why did my book write S2- if hydrogen sulfide isn't ionic?

It is indeed better to render (1) as $\ce{H2S -> S +2H^+ + 2e^-}.$ Since you did not ask, I assume you know the permanganate reduction equation. When you combine this reduction with the correctly ...
• 38.2k
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### Convention for writing concentration units

None of the notations, ppm (w/v) or (w/v) ppm, is a standard notation. I don't see this used much in analytical chemistry publications. Very rarely, you might see ppm (w/v) in some papers. If you are ...
• 31.9k
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### What will happen if the electrolysis of Brine takes place for a long time?

If the electrolysis is done without a separation membrane, the chlorine gas will partly be dissolved in the solution and react with NaOH according to : $\ce{2 NaOH + Cl2 -> NaClO + NaCl + H2O}$. So ...
• 20.7k
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### Balanced reaction to Cr given H+

The half-equations are : $$\ce{Cr -> Cr^{3+} + 3 e-}$$ $$\ce{2 H+ + 2 e- -> H2}$$ So doubling the first and multiplying the second by $3$ and adding the results gives the final equation : \ce{...
• 20.7k