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wariber [46]
3 years ago
8

Which orbital would the electron of a ground state hydrogen atom occupy? 1s 1p 2p none of the above 0s?

Chemistry
1 answer:
noname [10]3 years ago
6 0
From the periodic table, we can see that:
At ground state, the hydrogen atom has one electron
Based on the electronic configuration, at ground state this electron should be occupying the orbital (1s)

Since (1s) is not one of the choices, therefore, the answer is "none of the above"
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Given a diprotic acid, H 2 A , with two ionization constants of K a1 = 3.0 × 10 − 4 and K a2 = 4.0 × 10 − 11 , calculate the pH
Flauer [41]

Answer:

The pH for a 0.117 M solution of NaHA is 2.227

Explanation:

To solve the question we check the difference in the Ka values thus

Ka₁ / Ka₂ = 7500000 < 10⁸ so we are required to calculate each value as follows

We therefore have

H₂X→ H⁺¹+HX⁻¹ with Ka₁ = 3.0 × 10⁻⁴

Therefore

3.0 × 10⁻⁴ = (x²)/(0.117)

x² = 3.0 × 10⁻⁴ ×0.117 and x = 5.925 × 10⁻³ = [H⁺]

Similarly

Ka₂ =  4.0 × 10⁻¹¹

and

4.0 × 10⁻¹¹= (x²)/(0.117)

x²= 0.117× 4.0 × 10⁻¹¹

x= 2.16× 10⁻⁶

Total H⁺ =  5.925 × 10⁻³+2.16× 10⁻⁶ = 5.927 × 10⁻³

Since pH = -log of hydrogen ion concentration,

pH = - log 5.927 × 10⁻³ = 2.227

6 0
4 years ago
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Gnesinka [82]

Answer:

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Explanation:

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2 years ago
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rusak2 [61]

Answer:

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Explanation:

5 0
3 years ago
A solution of sulfuric acid is titrated with a solution of sodium hydroxide to the phenolphthalein end point. The sample of sulf
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Answer:

a. 2NAOH + H2SO4 —> NA2SO4 + 2H2O

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3 years ago
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Answer:

pH>7

sour taste

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Explanation:

8 0
3 years ago
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