Which term describes this reaction? CH3Br(aq) + OH-(aq) -> CH3OH(aq) + Br-(aq) A. addition B. condensation C. elimination D. substitution

Answers

Answer 1

Answer:

Answer is: D. substitution.

Substitution reaction or single displacement reaction is a chemical reaction in which one functional group in a chemical compound is replaced by another functional group.

Balanced chemical reaction: CH₃Br(aq) + OH⁻(aq) → CH₃OH(aq) + Br⁻(aq).

In this balanced chemical reaction hydroxy group OH⁻ replaced one atom of bromine (Br⁻) in methyl bromide (CH₃Br).

Answer 2

Answer:

Answer : The correct option is, (D) Substitution reaction.

Explanation :

Addition reaction : It is a type of reaction in which a molecule combined with the another molecule to give a new larger molecule.

The general representation of this reaction is,

$A+B\rightarrow C$

Condensation reaction : It is a type of reaction in which two molecules combine to form a larger molecule and also producing a smaller molecule such as water.

$R_1-OH+H-OOCR_2\rightarrow R_1-O-COR_2+H_2O$

Elimination reaction : It is a type of reaction in which the loss of elements from the starting material to form a double bond in the product.

The general representation of this reaction is,

$HR_1-R_2X+B\rightarrow R_1=R_2+HB^++X^-$

Substitution reaction : It is a type of reaction in which one functional group is replaced by the another functional group.

The general representation of this reaction is,

$AB+C\rightarrow AC+B$

(B and C are the two different functional groups)

In the given reaction, Br (functional group) is replaced by the hydroxide ion (functional group). So, this reaction is a substitution reaction.

Hence, the given reaction is a substitution reaction.

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Given: Z = 0.43Y + 12 ; What is Y when Z = 28 ?
Can someone explain this one?

Answers

Z=0.43y+12=28=0.43y+12=28-12=0.43y=16=0.43y,then u divide 0.43y by itself and by 16,you will get y=37.209

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Answers

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As the temperature of a chemical reaction in the gas phase is increased, the rate of the reaction increases because(1) fewer particle collisions occur
(2) more effective particle collisions occur
(3) the required activation energy increases
(4) the concentration of the reactants increases

Answers

Answer: option (2) more effective particle collisions occur.

Justification:

Always keep in mind that the temperature is a measure of the average kinetic energy of the particles.

The higher the temperarute the hiigher the kinetic energy.

Also, remeber that the kinetic energy is the energy of motion: the higher the kinetic energy the hgher the speed of the particles and the more energetic the collisions.

Therefore, those more energetic collisions will increase the number of collisions that overcome the activiation energy leading to higher rate of conversion (reaction), whic is what a more effective particle collisions occur mean.

Which statement best compares the energy involved in melting with the energy involved in boiling for a given liquid?A....Energy is removed from the particles in each change, but more energy is removed in melting than in boiling because the attractions are weaker.

B....Energy is removed from the particles in each change, but more energy is removed in boiling than in melting because the attractions are weaker.

C....Energy is added to the particles in each change, but boiling requires more energy than melting because the attractions must be completely overcome.

D....Energy is added to the particles in each change, but melting requires more energy than boiling because the attractions must be completely overcome.

Answers

The correct answer is C. When a solid turns into a liquid the intermolecular forces are just weakens enough to allow the molecules to move around each other. When a liquid turns into a gas the intermolecular forces need to be completely broken since gases ideally do not have any attraction between its particles. It takes a lot more energy to completely brake intermolecular attractions than it does to weaken them.
I hope this helps. Let me know if anything is unclear.

C. Energy is added to the particles in each change, but boiling requires more energy than melting because the attractions must be completely overcome.

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Answers

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