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myrzilka [38]
3 years ago
5

Consider the following two equilibria and their respective equilibrium constants: (1) NO(g) + ½O2(g) NO2(g) (2) 2NO2(g) 2NO(g) +

O2(g) Which one of the following is the correct relationship between the equilibrium constants K1 and K2?
K2 = 1/(2 K1)

K2 = 2/K1

K2 = 1/(2K1)2

K2 = (1/K1)2

K2 = –K1/2
Chemistry
2 answers:
Brilliant_brown [7]3 years ago
8 0

Answer:

The fourth option is correct K2 = (1/K1)2

Explanation:

Step 1: Data given

(1) NO(g) + ½O2(g) ⇆ NO2(g)  

(2) 2NO2(g) ⇆ 2NO(g) + O2(g)

Step 2: Calculate K1

K1 = [NO2] / [NO][O2]^0.5

Step 3: Calculate K2

K2 = [NO]²[O2]/[NO2]²

Step 4: When we square the first equation

K1² = [NO2]² / [NO]²[O2]

Step 5: Calculate the reverse reaction

1/K1² = [NO]²[O2] / [NO2]² = K2

So K2 = 1/K1²  = 1²/K1²

The fourth option is correct K2 = (1/K1)2

leva [86]3 years ago
8 0

Answer:

The answer is K2 = (1/K1)2

Explanation:

For the first reaction:

NO + 1/2O₂ = NO₂

K_{1} =\frac{[NO_{2}] }{[NO][O_{2}]^{1/2}  }

For the second reaction:

2NO₂ = 2NO + O₂

K_{2} =\frac{[NO]^{2}[O_{2}]  }{[NO_{2}]^{2}  }=\frac{[NO][O_{2}]^{1/2}  }{[NO_{2}]^{2}  } =(\frac{1}{K_{1} } )^{2}

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satela [25.4K]
Simple distillation is a method for separating the solvent from a solution

EXAMPLE: water can be separated from salt solution, because water has a much lower boiling point than salt. When the solution is heated, the water evaporates.
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3 years ago
The sodium isotope with 13 neutrons. Express your answer as an isotope
wariber [46]

Answer:

          \large\boxed{\large\boxed{^{24}_{11}Na}}

Explanation:

The question is asking to write the <em>isotopic symbol </em>of the form ^A_ZX for the <em>sodium isotope with 13 neutrons</em>.

In general, the isotopic symbol in the given form shows:

  • The element's chemical symbol: X

  • A: mass number of the isotope, written as a superscript to the left of the element's simbol, and

        A = number of protons + number of neutrons

  • Z: atomic number of the isotope, written as a subscript to the left of the elements's symbol,

        Z = number of protons

The atomic symbol of sodium is Na.

The atomic number, or number of protons, is the same for every isotope of the element, and you can find it in any periodic table. Tha atomic number of sodium is 11. Thus:

  • Z = 11

The mass number is the number of protons plus neutrons, hence:

  • A = 11 + 13 = 24

Now you can write the isotope symbol for the sodium isotope with 13 neutrons:

         ^{24}_{11}Na

6 0
3 years ago
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mash [69]

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gravity

Explanation:

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What is the volume of stank of nitrogen that contains 17 moles of nitrogen at 34 C under 12,000Pa?
Otrada [13]

Answer:

3626.76dm³

Explanation:

Given parameters:

Number of moles of Nitrogen in tank = 17moles

Temperature of the gas = 34°C

Pressure on the gas = 12000Pa

Unkown:

Volume of the tank, V =?

Converting the parameters to workable units:

We take the temperature from °C to Kelvin

K = 273 +  °C  = 273 + 34 = 307k

Taking the pressure in Pa to atm:

101325Pa = 1atm

12000Pa = 0.118atm

Solution:

To solve this problem, we employ the use of the ideal gas equation. The ideal gas law combines three gas laws which are the Boyle's law, Charles's law and the Avogadro's law.

            It is expressed as PV = nRT

The unknown is the Volume and we make it the subject of the formula

             V = \frac{nRT}{P}

Where R is called the gas constant and it is given as 0.082atmdm³mol⁻¹K⁻¹

Therefore  V = \frac{17 x 0.082 x 307 }{0.118} = 3626.76dm³

3 0
3 years ago
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The trend in electronegativity is F &gt;Cl &gt;Br; therefore, the most ionic compound (CH2F2) has the lowest boiling point, and
bulgar [2K]

Answer:

False

Explanation:

Increase in polarity of a molecule leads to higher boiling points. The more polar a molecule is, the higher the energy required to breaks intermolecular forces of attraction hence the higher the boiling point. This is the reason why ionic compounds and compounds having polar covalent bonds in them tend to have high boiling points.

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