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DerKrebs [107]
2 years ago
10

Which bond from each set has the greatest bond energy and why?. A.) N-O or N-F. B.) B-F or B-Cl. C.) B-C or O-F. D.) C-O or C=O.

E.) P-Br or P-Cl
Chemistry
2 answers:
Vikki [24]2 years ago
7 0

Answer:

    A) N-F,  B) B-F,  C) O-F, D) C=O, E) P-Cl.

Explanation:

Bond energy is the energy that is to break the molecule apart. Bond energy affected by the electronegativity and no. of bonds.

A) N-F bond is more powerful than N-O because Fluorine is the highest electronegative element in the periodic table.

B) B-F has strongest bond than B-Cl, due to higher electronegativity of fluorine.

C) O-F has highest bond energy than B-C, because O is strong covalently bonded with fluorine which is the highest electronegative.

D) C=O has highest bond energy, because double bond has required more energy to break than the single bond.

E) P-Cl has high bond energy than the P-Br, because Cl has small size and more electronegative than Br.

Solnce55 [7]2 years ago
5 0
A) N-F becasue F ismore electronegative so the covalent bond is stronger
B) B-Cl because Cl is a smaller atom than Br so the covalent bond is stronger 
C) O-F because the atoms are more electronegative so the bond is stronger.
D) C=O because the double bond is stronger than the single bond.
E) P-Cl because Cl is smaller than Br so the electrostatic force of attraction between the positive nucleus and the bonding electrons is stronger, thus the covalent bond is stronger 

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Which of the following is NOT a true statement about liquids?
Nookie1986 [14]

Answer:

4

Explanation:

1 is correct

Liquids have no definite shape as they take up the shape of the container. Thus, we can say a liquid has no shape of its own but rather has the shape of the container in which it is filled.

2 is correct

When the atmospheric temperature is increased, it also will increase the boiling point of the liquid

3 is correct

This is an extension of the statement 2. While we decrease the atmospheric pressure, we are also decreasing the boiling point

4 is incorrect

A liquid have a definite volume. When we say a volume is definite, it means the volume is fixed and does not change. The volume of liquids is definite for a particular mass of the liquid and does not change

8 0
3 years ago
Consider the following reaction at a high temperature. Br2(g) ⇆ 2Br(g) When 1.35 moles of Br2 are put in a 0.780−L flask, 3.60 p
UNO [17]

Answer : The equilibrium constant K_c for the reaction is, 0.1133

Explanation :

First we have to calculate the concentration of Br_2.

\text{Concentration of }Br_2=\frac{\text{Moles of }Br_2}{\text{Volume of solution}}

\text{Concentration of }Br_2=\frac{1.35moles}{0.780L}=1.731M

Now we have to calculate the dissociated concentration of Br_2.

The balanced equilibrium reaction is,

                              Br_2(g)\rightleftharpoons 2Br(aq)

Initial conc.         1.731 M      0

At eqm. conc.      (1.731-x)    (2x) M

As we are given,

The percent of dissociation of Br_2 = \alpha = 1.2 %

So, the dissociate concentration of Br_2 = C\alpha=1.731M\times \frac{1.2}{100}=0.2077M

The value of x = 0.2077 M

Now we have to calculate the concentration of Br_2\text{ and }Br at equilibrium.

Concentration of Br_2 = 1.731 - x  = 1.731 - 0.2077 = 1.5233 M

Concentration of Br = 2x = 2 × 0.2077 = 0.4154 M

Now we have to calculate the equilibrium constant for the reaction.

The expression of equilibrium constant for the reaction will be :

K_c=\frac{[Br]^2}{[Br_2]}

Now put all the values in this expression, we get :

K_c=\frac{(0.4154)^2}{1.5233}=0.1133

Therefore, the equilibrium constant K_c for the reaction is, 0.1133

7 0
3 years ago
An observation that does not deal with numbers?
enyata [817]
Qualitative observation. Which is data or information with your senses such as sight, taste, smell, and touch.
5 0
3 years ago
Which best describes the transition from gas to liquid?
Nina [5.8K]

A - its condensation and gas particles have a higher kinetic energy

8 0
2 years ago
Read 2 more answers
The compound 1-butene is modeled here. What would need to happen for molecules of this compound to transform into polybutene? A.
kompoz [17]
In order to form polymers, we need to chain molecules together. This involves making bonds between them.

Shifting H’s around doesn’t accomplish anything.

Forming more double bonds will have the opposite result, as it would make the molecules more stable and less likely to react with each other.

Adding oxygen to the molecule no longer makes it polybutene. That would likely result in the formation of some sort of ether, as hey would react to form a C-O-C Bond.

The only answer left is A. In order to form polyalkenes, we have to break a double bond so that it’s available to form more covalent bonds.

Hope this helps
4 0
3 years ago
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