Chemistry, 22.10.2020 19:01 mia12340

The pKa of CH3COOH is 4.8 and the pKa of HCOOH is 3.8. Given this information, one knows that .

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Answer from: jojo887314

HCOO- is a weaker base than CH3COO- .

Explanation:

The options are:

HCOO- is a weaker base than CH3COO- . TRUE. The lower pKa the strongest acid. That means HCOOH is a stronger acid than CH3OOH. And, the strongest acid, the weakest base, thus, HCOO- is a weaker base than CH3COO.-

HCOOH is a weaker acid than CH3COOH . FALSE. The HCOOH is the weaker acid because has the lower pKa value.

HCOOH reacts with OH- while CH3COOH does not . FALSE. Both weak acid reacts with OH- producing its conjugate base and water.

CH3COOH completely ionizes in water . FALSE. A weak acid as CH3COOH partially ionizes in water.

CH3COOH reacts with OH- while HCOOH does not. FALSE. Both acids will react with OH-.

Answer from: Quest

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of rain or snow. this dry air produces a rain shadow.

Answer from: Quest

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

$^{m}_{4}x$ and $^{m}_4y$

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

$^{m}_{5}x^{-}$

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be $^{9}_{5}be^{-}$ and $^{9}_{4}be$ .

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.

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The pKa of CH3COOH is 4.8 and the pKa of HCOOH is 3.8. Given this information, one knows that ....

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