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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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Answer:

boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At)

Explanation:

metalloids are elements that are in between the metals and nonmetals. they are in between because they have properties of both metals and nonmetals.

you can search "metalloids on the periodic table" and go to images to see what i mean :)

5 0
3 years ago
Pretend that you are the size of an atom, observing a reaction between a potassium atom and a fluorine atom. Write an account of
Crazy boy [7]
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7 0
3 years ago
Why does Hess's law allow you to determine the enthalpy change of a<br> reaction?
lana [24]

Enthalpy is a state function

Explanation:

The Hess's law allows us to determine the enthalpy change of a reaction because enthalpy is a state function. It does not depend on the individual path take in going from reactants to products in the reaction.

  • Enthalpy changes are the heat changes accompanying physical and chemical changes.
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  • Enthalpy changes for some reactions are not easily measurable experimentally.
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learn more:

Hess's law brainly.com/question/11293201

#learnwithBrainly

5 0
3 years ago
How many grams of NaCl (molecular weight = 58.4 g mole-1) would you dissolve in water to make a total volume of 500 mL of soluti
kolezko [41]

Given :

Volume , V = 500 mL .

Molarity , M = 0.5 M .

Molecular mass of NaCl is 58.4\ g/mole .

To Find :

How many grams of NaCl is required .

Solution :

Let , NaCl required is x gram .

Molarity is given by :

M=\dfrac{\text{Number of moles}}{\text{Volume (in liters) }}\\\\M=\dfrac{m}{M\times V}\\\\0.5=\dfrac{x}{58.4\times 0.5}\\\\x=0.5^2\times 58.4\ g\\\\x=14.6\ g

Hence , this is the required solution.

6 0
2 years ago
how does getting funding from the government affect scientific research?? a- the government helps the scientist decide what rese
sertanlavr [38]

Answer:

d- Scientists have to follow government rules made to protect people.

Explanation:

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