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vladimir1956 [14]
2 years ago
12

Given the following rate equation, complete the sentences to identify the reaction order for each reagent, the overall reaction

order, and what effect doubling substance A and halving substance B would have on the overall rate of the process.
Rate= k[A] [B]^3

a. zero
b. first
c. second
d. third
e. fourth
f. remain the same as
g. be 1/4 of
h. be 1/2 of
i. be twice
j. be four times


1. Given the rate equation. the reaction order with respect to A is _________order
2. Given the rate equation, the reaction order with respect to B is _________ order
3. Given the rate equation. the overall reaction order I s________ order
4. Given the rate equation. when the concentration of A is doubled while that of B is halved, the rate will ________the original rate.
Chemistry
1 answer:
Eva8 [605]2 years ago
3 0

Answer:

1. First

2. Third

3. Fourth

4.remain the same as

Explanation:

Given the reaction equation;

Rate= k[A] [B]^3

We can see that the order of reaction is first order with respect to reactant A and third order with respect to reactant B. This gives an overall fourth order reaction.

If the concentration of A is doubled and that of B is halved. The rate of reaction remains the same.

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Answer:

<h3>1)</h3>

Structure One:

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Structure Two:

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<h3>2)</h3>
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The N atom is the one that is "likely" to be attracted to an anion. See explanation.

Explanation:

When calculating the formal charge for an atom, the assumption is that electrons in a chemical bond are shared equally between the two bonding atoms. The formula for the formal charge of an atom can be written as:

\text{Formal Charge} \\ = \text{Number of Valence Electrons in Element} \\ \phantom{=}-\text{Number of Chemical Bonds} \\\phantom{=} - \text{Number of nonbonding Lone Pair Electrons}.

For example, for the N atom in structure one of the first question,

  • N is in IUPAC group 15. There are 15 - 10 = 5 valence electrons on N.
  • This N atom is connected to only 1 chemical bond.
  • There are three pairs, or 6 electrons that aren't in a chemical bond.

The formal charge of this N atom will be 5 - 1 - 6 = -2.

Apply this rule to the other atoms. Note that a double bond counts as two bonds while a triple bond counts as three.

<h3>1)</h3>

Structure One:

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Structure Two:

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  • C: 0
  • O: -1

Structure Three:

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In general, the formal charge on all atoms in a molecule or an ion shall be as close to zero as possible. That rules out Structure number one.

Additionally, if there is a negative charge on one of the atoms, that atom shall preferably be the most electronegative one in the entire molecule. O is more electronegative than N. Structure two will likely be favored over structure three.

<h3>2)</h3>

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