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Results tagged with acid-base
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user 19290
This tag should be applied to questions concerning acid and base reactions. An acid is capable of donating a hydron/ proton (Brønsted acid) or capable of forming a covalent bond with an electron pair (Lewis acid). A base on the other hand is a chemical species/ molecular entity having an available pair of electrons capable of forming a covalent bond with a hydron/ proton (Brønsted base) or with the vacant orbital of some other species (Lewis base).
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Is phosphorus trichloride really a stronger Lewis acid than antimony pentafluoride?
The following was a question from the ETS Chem GRE guide and apparently this was an actual question on an exam a few decades ago. Unfortunately, no explanation for the answer was given, and I couldn't …
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Chemical Equillibria Comparisons
In which of the following reactions is the equilibrium farthest to the left?
a) $\ce{P4O10 + $x$ H2O <=> 4 H3PO4(aq)}$
b) $\ce{AlCl3 + $x$ H2O <=> [Al(H2O)6]^3+ + 3 Cl- (aq)}$
c) $\ce{Li2O + $x$ H2 …
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Distribution of acid in Organic and Aqueous Phases
The value for the distribution constant for an organic acid, HA, between chloroform and water is $10^2$. The dissociation constant of the acid in water is $10^{-5}$, and it can be assumed that it doe …
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Calculating pH: Weak Acid, Strong Base
This is a question that had me puzzled for quite a while. I feel that information is missing.
A weak acid, $\ce{HA}$, $K_\textrm{a} = \pu{1.0E-4 M}$, is titrated with $\ce{NaOH}$. The concentration …
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