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igomit [66]
3 years ago
8

Which best describes how an ionic bond forms? A.Two molecules share an electron. B.One atom pulls an electron from another atom.

C.Two atoms share valence electrons. D.Two atoms both lose an electron.
Chemistry
2 answers:
Tema [17]3 years ago
3 0
Your answer Should be B

babunello [35]3 years ago
3 0

Answer:

The correct answer is B.One atom pulls an electron from another atom.

Explanation:

Chemical bonds are made so that atoms can have their entire outer layer, and thus have a stable electronic configuration.

An ionic bond is produced between metallic and non-metallic atoms, where electrons are completely transferred from one atom to another. During this process, one atom loses electrons and another one gains them, forming ions. Usually, the metal gives up its electrons forming a cation to the nonmetal element, which forms an anion.

So, <u><em>the correct answer is B.One atom pulls an electron from another atom.</em></u>

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4 years ago
Calculate the pka of hypochlorous acid. The ph of a 0.015 m solution of hypochlorous acid has a ph of 4.64.
o-na [289]

Answer:

  • pKa = 7.46

Explanation:

<u>1) Data:</u>

a) Hypochlorous acid = HClO

b) [HClO} = 0.015

c) pH = 4.64

d) pKa = ?

<u>2) Strategy:</u>

With the pH calculate [H₃O⁺], then use the equilibrium equation to calculate the equilibrium constant, Ka, and finally calculate pKa from the definition.

<u>3) Solution:</u>

a) pH

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  • [H_3O^+]= 10^{-4.64} = 2.29.10^{-5}

b) Equilibrium equation: HClO (aq) ⇄ ClO⁻ (aq) + H₃O⁺ (aq)

c) Equilibrium constant: Ka =  [ClO⁻] [H₃O⁺] / [HClO]

d) From the stoichiometry: [CLO⁻] = [H₃O⁺] = 2.29 × 10 ⁻⁵ M

e) By substitution: Ka = (2.29 × 10 ⁻⁵ M)² / 0.015M = 3.50 × 10⁻⁸ M

f) By definition: pKa = - log Ka = - log (3.50 × 10 ⁻⁸) = 7.46

5 0
4 years ago
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Reptile [31]
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                   so, time = distance/speed
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                             t = 0.00881333 sec  Approx
The answer is 0.00881333 sec  Approx
7 0
3 years ago
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