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4 votes

How can adding a strong base to a weak base be the same as a strong base in solution problem?

It might (or might not) be helpful to derive this result irectly from the mathematical equations. Say the strong base is $\ce{KOH}$ and the weak base is $\ce{NH3}$. There are four known quantities: ...
anon's user avatar
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3 votes
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Derivation of Gibbs phase rule

The remaining equations you point in your answer refer to the chemical equilibrium established between all the species across all the phases. I illustrate the scenario that you raised in the comments ...
Metal Storm's user avatar
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How do you use entropy and enthalpy to explain how chemical reactions come to equilibrium?

[OP] But how can, say, A becoming B reverse in entropic favourability purely based off the amounts of A and B? The entropy of reaction is dependent on the reaction coefficient Q (so on the activities ...
Karsten's user avatar
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Mass conservation in chemical equilibria

In general, the total amount after reaction finalizes is given by: $$n=n_0+\upsilon x$$ In terms of mass, this becomes: $$\frac{m}{M}=\frac{m_0}{M_0}+\upsilon x$$ Which is equivalent to: $$m=\frac{M}{...
Sam202's user avatar
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1 vote
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How can adding a strong base to a weak base be the same as a strong base in solution problem?

You have a weak base, like ammonia in water. Then you add a strong base, like sodium hydroxide. This is the equilibrium of ammonia in water $NH_3 + H_2O \rightleftarrows NH_4^+ + OH^- $ Now the sodium ...
Jonny_92's user avatar
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1 vote

pKa of acetic acid in pure NH3?

Sorry to necropost, but I think I might have something on this. This might not be completely accurate (I'm an amateur) but here I go, I guess. The hydrolysis of ammonium in water is illustrated as: $$ ...
Afunhuman inter's user avatar

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