Questions tagged [acid-base]
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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How does increased polarity of O-H increase acidity? Shouldn't it reduce it as bond strength increases?
A polar bond will be stronger than a relatively less polar bond. So how does increasing polarity of O-H bond ever increase acidity. Shoudn't it make it harder to release H+ and become less acidic.
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Question about the differences of white and grey NaH properties
We are having some problems with the next reaction in our lab. As you can see, is the sulfonylation of an indole in which we use NaH (60% dispersion in mineral oil) as a base. This reaction goes with ...
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Acid base titration molar ratio [closed]
Consider the following neutralisation reaction:
$$ \ce{2HNO3 + Ba(OH)2 -> Ba(NO3)2 + 2H2O} \tag{1} $$
I would be glad for help in how to solve this problem with $c_1V_1 = c_2 V_2$, because the ...
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Common Ion effect with sulphuric acid
Sulphuric acid dissociates completely (H2SO4 -> HSO4⁻ + H⁺).
Its product HSO4⁻ has a pKa of 1.92 which should then dissociate partially into SO4²⁻ and H⁺.
I was trying to find out the pH of a 0.05M ...
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Question on electron density
I was working with ammonia ($\ce{NH3}$) and phosphine($\ce{PH3}$). Both have lone pair electron. But $\ce{NH3}$ is stronger base (Lewis base) than $\ce{PH3}$.
I was told by my instructor that it is ...
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Why is the ionic product of water also the equilibrium constant of dissociation of water?
This answer presents a derivation of the value of ionic product of water at $25^{\circ}\text{C}$.
The relation $K_\text{eq} = \operatorname{e}^{-\frac{\Delta_\text{r}G^{\circ}}{RT}}$ is used for the ...
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Is boric acid aqueous solution corrosive to stainless steel? [closed]
I'm thinking of trying an aqueous boric acid solution in a nebulizer for a sinus infection, in a similar strength as for eyewash (anywhere from 1 tsp. in 4 oz. to 1 tsp. in 32 oz.). My nebulizer has a ...
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Making Sodium Citrate
I've been trying to make Sodium Citrate and I've seen online people saying just react sodium bicarbonate with citric acid in water (with correct ratios) and boil off/remove water once the reaction has ...
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How long would it take fluoroantimonic acid to melt through a tiger's body? [closed]
I'm writing a story in which a character throws a knife containing fluoroantimonic acid contained within hydrofluoric acid, which is itself contained within fluorinated plastic, into a tiger's mouth. ...
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Why is the lysine side chain more basic?
As per PubChem: $pK_1 = 2.18$; $pK_2 = 8.95$; $pK_3 = 10.53$ at 38 °C, indicating that the side chain amino group is deprotonated at a higher pH, indicating it is more basic. I tried to justify this ...
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Why are buffer solutions not neutral
I am very confused about buffer solutions and I have lots of ideas about them which don’t integrate together so I really can’t tell which are correct and which are wrong. That being the case it’s ...
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Can carbonic acid form a salt with pH < 7?
Please read edit before answering
Background
I am currently studying in 10th grade. This question appeared in my science exam -
Which acid does not form an acidic salt?
Phosphoric acid
Carbonic acid
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Effects when 100 mmol NaHCO3 are mixed with 50 mmol HCl
I read somewhere that when $\pu{100 mmol}\ \ce{NaHCO3}$ are mixed with $\pu{50 mmol}\ \ce{HCl}$, a buffer arises. I'm confused, since $\ce{HCl}$ is a strong acid, and I thought the classic buffer is ...
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Determination of the composition of the mixture based on acid-base titration
The solution can contain $\ce{HCl}$, $\ce{H3PO4}$ or $\ce{NaH2PO4}$
individually or in all possible combinations. An aliquot of
$25.00\,\text{mL}$ of this solution consumes $14.56\,\text{mL}$ of
$0....
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What will be the preferred reaction between phosphorous acid (H3PO3) and potassium hydroxide (KOH) [closed]
""To neutralize completely $\pu{20 mL}$ of $\pu{0.1 M}$ aqueous solution of phosphorus $\ce{H3PO3}$ acid the volume of $\pu{0.1 M}$ aqueous $\ce{KOH}$ solution required is: ____""
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