At a certain time in a reaction, substance a is disappearing at a rate of 4.0×10−2 m/s, substance

2 answers
Question:

At a certain time in a reaction, substance a is disappearing at a rate of 4.0×10−2 m/s, substance b is appearing at a rate of 2.0×10−2 m/s, and substance c is appearing at a rate of 6.0×10−2 m/s. which of the following could be the stoichiometry for the reaction being studied?
(a) 2 a → b + 3 c
(b) a → 2 b + 3 c
(c) 2 a + b → 3 c
(d) a + 2 b → 3 c
(e) 4 a → 2 b + 3 c

Answers

Answer : The correct option is, (A) [tex]2A\rightarrow B+3C[/tex]

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

As we are given that:

Rate of disappearing component A = [tex]-r_A=4.0\times 10^{-2}M/s[/tex]

Rate of appearing component B = [tex]r_B=2.0\times 10^{-2}M/s[/tex]

Rate of appearing component C = [tex]r_C=6.0\times 10^{-2}M/s[/tex]

The general reaction is:

[tex]aA\rightarrow bB+cC[/tex]

As per question the stoichiometry relation will be:

[tex]\frac{-r_A}{a}=\frac{r_B}{b}=\frac{r_C}{c}[/tex]

Now put the values of rate of following components, we get:

[tex]\frac{4.0\times 10^{-2}}{a}=\frac{2.0\times 10^{-2}}{b}=\frac{6.0\times 10^{-2}}{c}[/tex]

[tex]\frac{4}{a}=\frac{2}{b}=\frac{6}{c}[/tex]

[tex]\frac{2}{a}=\frac{1}{b}=\frac{3}{c}[/tex]

Thus, the stoichiometry relation is:

a : b : c = 2 : 1 : 3

Thus, the required equation will be:

[tex]2A\rightarrow B+3C[/tex]

Answer : The required equation will be:

[tex]2A\rightarrow B+3C[/tex]

Explanation :

Rate law is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

As we are given that:

Rate of disappearing component A = [tex]-r_A=4.0\times 10^{-2}M/s[/tex]

Rate of appearing component B = [tex]r_B=2.0\times 10^{-2}M/s[/tex]

Rate of appearing component C = [tex]r_C=6.0\times 10^{-2}M/s[/tex]

The general reaction is:

[tex]aA\rightarrow bB+cC[/tex]

As per question the stoichiometry relation will be:

[tex]\frac{-r_A}{a}=\frac{r_B}{b}=\frac{r_C}{c}[/tex]

Now put the values of rate of following components, we get:

[tex]\frac{4.0\times 10^{-2}}{a}=\frac{2.0\times 10^{-2}}{b}=\frac{6.0\times 10^{-2}}{c}[/tex]

[tex]\frac{4}{a}=\frac{2}{b}=\frac{6}{c}[/tex]

[tex]\frac{2}{a}=\frac{1}{b}=\frac{3}{c}[/tex]

Thus, the stoichiometry relation is:

a : b : c = 2 : 1 : 3

Thus, the required equation will be:

[tex]2A\rightarrow B+3C[/tex]

Similar Solved Works

4 answers

Being employed may help increase self-esteem.Please select the best answer from the choices providedTF

Being employed may help increase self-esteem. Please select the best answer from the choices provided T F...
10 answers

Which of the following statements describes a difference between a chemical change and a physical change

Which of the following statements describes a difference between a chemical change and a physical change in a substance...
7 answers

Give an ex on negative slope​

Give an ex on negative slope​...
4 answers

I am part of a whole i am less than 1/2 but greater than four tents i am a decimal with the digit two in my hundreds place what number

i am part of a whole i am less than 1/2 but greater than four tents i am a decimal with the digit two in my hundreds place what number am i. pls help...
4 answers

The living quarters in this Hooverville can best be described asANSWER: temporary edge.2020

The living quarters in this Hooverville can best be described as ANSWER: temporary edge.2020...
3 answers

Gomez runs a small pottery firm. he hires one at $11,500 per year, pays annual rent of

Gomez runs a small pottery firm. he hires one at $11,500 per year, pays annual rent of $7,000 for his shop, and spends $22,500 per year on materials. he has $40,000 of his own funds invested in equipment (pottery wheels, kilns, and so forth) that could earn him $6,500 per year if alternatively inve...
4 answers

Describe the plot of beautiful bellandia in three to five sentences

Describe the plot of beautiful bellandia in three to five sentences...
4 answers

How are economic activities modified to fit con elevation of the region? (no answer choices)

How are economic activities modified to fit con elevation of the region? (no answer choices)...
3 answers

Achild whirls a 3.00 kg ball on a string .50 m from the axis of rotation in a horizontal circle. the ball makes 1 revolution

Achild whirls a 3.00 kg ball on a string .50 m from the axis of rotation in a horizontal circle. the ball makes 1 revolution in 1.0 s. a) what is the centripetal acceleration of the ball? b) what is the tension in the string?...
4 answers

1.Jakie promieniowania emituje zwykła żarówka , a jakie żarówka energooszczędna ? 2.Co to jest wiązka światła i jakie

1.Jakie promieniowania emituje zwykła żarówka , a jakie żarówka energooszczędna ? 2.Co to jest wiązka światła i jakie są jej rodzaje ? 3.Jak rozchodzi się światło w ośrodkach optycznych jednorodnych , a jak w niejednorodnych ? 4.Jak powstaje miraż dolny i górny i gdzie można go zoba...
10 answers

To begin your response, identify your country, its type of government, and the parts of its government. Write your paragraph

To begin your response, identify your country, its type of government, and the parts of its government. Write your paragraph in this space. Country Georgia!...
4 answers

Come on 50 points take it and follow me because today I am giving points

Come on 50 points take it and follow me because today I am giving points...
3 answers

PLEASE HELP ME GUYS NO LINKS OR NOTHING ACC PEOPLE ANSWEr 25 POINTS AND BRAINLIEST!

PLEASE HELP ME GUYS NO LINKS OR NOTHING ACC PEOPLE ANSWEr 25 POINTS AND BRAINLIEST! [tex]PLEASE HELP ME GUYS NO LINKS OR NOTHING ACC PEOPLE ANSWEr 25 POINTS AND BRAINLIEST![/tex]...
3 answers

Which of the following is a sign of Syndrome E in action? (5 points)Carefully planned actionsActing instinctually without

Which of the following is a sign of Syndrome E in action? (5 points) Carefully planned actions Acting instinctually without thinking Feeling extreme empathy for others Rejecting the influence of others...
4 answers

Most rocks are made of what elements?oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesiumquartz, granite,

Most rocks are made of what elements? oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium quartz, granite, marble, limestone, shale, sandstone, obsidian, mica carbon, hydrogen, rubidium, nickel, zink, copper, lead, gallium lithium, nitrogen, selenium, fluorine, chlorine, antimony...
3 answers

Accounting projects grade 12 2021 term 2 limpopo​

Accounting projects grade 12 2021 term 2 limpopo​...
4 answers

What’s the correct answer for this?Two chords AB and CD intersect at E. If AE=11.6cm, EB =8.9 cm

What’s the correct answer for this? Two chords AB and CD intersect at E. If AE=11.6cm, EB =8.9 cm and CE =6.9 cm find the length of ED....
3 answers

Which provides the correct procedure when converting a number from scientific notation to standard notation?

Which provides the correct procedure when converting a number from scientific notation to standard notation? [tex]Which provides the correct procedure when converting a number from scientific notation to standard[/tex]...
3 answers

Answer correctly to win which word in the sentence is the direct object? i saw the new action movie

Answer correctly to win which word in the sentence is the direct object? i saw the new action movie last night at the theater. a. movie b. i c. action d. saw - 1st to answer wins - 1st to answer wins-...
10 answers

Which of these is the best source of information about a health product ? a. company claims b. celebrity

Which of these is the best source of information about a health product ? a. company claims b. celebrity doctors c. paid endorsers d. scientific research...

-- 0.014599--