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alekssr [168]
3 years ago
15

When do exceptions to the octet rule occur

Chemistry
1 answer:
yaroslaw [1]3 years ago
7 0
Molecules, such as NO, with an odd number of electrons; (2) molecules in which one or more atoms possess more than eight electrons, such as SF 6; and (3) molecules such as BCl 3, in which one or more atoms possess less than eight electrons.
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What can you determine about the feasibility of a reaction if the enthalpy is positive and
kvasek [131]

If the enthalpy is positive and the entropy is positive, the Gibbs energy will always be positive, and the reaction will never be feasible.

<h3>What is the Gibbs Free Energy?</h3>

The Gibb Free Energy is used to obtain the feasibility of a reaction. If the Gibbs free energy is positive the reaction is not spontaneous. If the value is negative, the reaction is spontaneous while a zero values indicates equilibrium.

From the equation;

ΔG = ΔH - TΔS, it follows that if the enthalpy is positive and the entropy is positive, the Gibbs energy will always be positive, and the reaction will never be feasible.

Learn more about Gibbs Free energy:brainly.com/question/20358734

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7 0
2 years ago
What happens in a neutralization reaction?
mina [271]

Answer:

Answer is letter B

Explanation:

The first one is wrong because acids release H+, not bases.

The third one is wrong because the pH is exactly 7, not greater.

The last one is wrong because it is vague and does not fit a neutralization reaction.

7 0
3 years ago
Groups of the periodic table correspond to elements with:
myrzilka [38]
D. similar number of nuetrons
6 0
4 years ago
A molecule is known to have a molar absorptivity of 18,650 at a certain wavelength. A spectrometer is tuned to this wavelength a
iren2701 [21]

Answer:

17,932.69 g/mol is the molecular weight of the substance.

Explanation:

Using Beer-Lambert's law :

Formula used :

A=\epsilon \times c\times l

where,

A = absorbance of solution = 1.04

c = concentration of solution =?

l = length of the cell = 1 cm

\epsilon = molar absorptivity of this solution = 18,650 M^{-1} cm^{-1}

Now put all the given values in the above formula, we get the molar absorptivity of this solution.

1.04=18,650 M^{-1} cm^{-1}\times c)\times (1cm)

c = 5.576\times 10^{-5} M

Concentration=\frac{\text{Mass of compound}}{\text{Molecular mass of compound}\times V}

V = Volume of the solution in L

Molecular weight of the substance = x

V = 100 mL = 0.1 L

Mass of the substance = 100 mg = 0.1 g

5.576\times 10^{-5} M=\frac{0.1 g}{x\times 0.1 L}

x = 17,932.69 g/mol

17,932.69 g/mol is the molecular weight of the substance.

6 0
3 years ago
What happens to the number of carbon atoms in each compound?
katrin [286]
The think that happens to the number of carbon atoms in each compound is that they increase by 1
4 0
3 years ago
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