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balu736 [363]
2 years ago
12

The disinfectant phenol, C₆H₅OH, has a pKa of 10.0 inwater, but 14.4 in methanol.(a) Why are the values different?

Chemistry
1 answer:
dolphi86 [110]2 years ago
8 0
  • Different intermolecular attractions accessible to solvent molecules cause various solvent effects, in part.
  • Certain solvents form hydrogen bonds. A fairly typical example is water, as well as alcohols like methanol. Others don't donate hydrogen bonds; they can only accept them.
  • Some solvents may more effectively stabilize the anions that result from the deprotonation of Bronsted acids. As a result, when measured in various solvents, pKa values may vary.
<h3>What is pKa value?</h3>
  • In layman's terms, pKa is a measurement of an acid's strength. A strong acid will have a pKa value that is lower than 0.
  • To be more specific, pKa is the Ka value's negative log base ten value (acid dissociation constant).
  • How tightly a proton is retained by a Bronsted acid is how the strength of an acid is measured.

Learn more about pKa value here:

brainly.com/question/11168324

#SPJ4

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All reactions involving a change in temperature are exothermic.<br> a. True<br> b. False
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en un recipiente se tiene 800 g de una solución al 35% en masa de ácido sulfuroso, de la cual se evapora 80ml de agua. ¿cuál es
Alinara [238K]

The mass percent of sulfurous acid in the new solution : 38.9%

<h3>Further explanation</h3>

<em>In a container you have 800 g of a 35% by mass solution of sulfurous acid, from which 80 ml of water evaporates. What is the mass percent of sulfurous acid in the new solution? data: density of water is 1g / ml.</em>

<em />

solution 1

composition :

  • 35% acid :

\tt 0.35\times 800~g=280~g

  • water :

\tt 800-280=520~g

solution 2(new solution)

composition :

  • water

\tt 520-(80~ml\times 1~g/ml)=440~g

  • Total mass of new solution after water evaporated

\tt 280(acid)+440(water)=720~g

  • %mass of acid in a new solution

\tt \dfrac{280}{720}\times 100\%=38.9\%

5 0
2 years ago
02. Using Tables 1 to 3, what pattern do you observe in terms of the phase and number of carbon atoms of the alkanes, alkenes, a
BabaBlast [244]

Hey there mate ;), Im Benjemin and lets solve your question.

★ (Alkanes) : forms single bonds between carbon atoms.

The first four elements are gases and others are liquid in state.

★(Alkenes) : forms double bonds between carbon atoms.

The first three alkenes are gases and rest are liquid.

★ (Alkynes) : forms triple bonds between carbon atoms.

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According to boiling point :

The larger structure of the hydrocarbons, the higher the boiling points they have.

In the 3 tables, we can see that the boiling point increases.

5 0
2 years ago
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