1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sidana [21]
3 years ago
15

A reaction was performed in which 0.55 g of 2‑naphthol was reacted with a slight excess of allyl bromide to make 0.59 g of allyl

2‑naphthyl ether. Calculate the theoretical yield and percent yield for this reaction. Allyl bromide has a density of 1.40 g/mL .
Chemistry
1 answer:
Ronch [10]3 years ago
6 0

Answer:

  • Theoretical yield = 0.7028 g
  • Percent yield = 83.95%

Explanation:

The reaction that takes places is:

  • C₁₀H₈O + C₃H₅Br → C₁₃H₁₂O + HBr

The<u> theoretical yield</u> is calculated when assuming that <em>all of the limiting reactant transformed into the product</em>:

  • 0.55 g naphthol ÷ 144gNaphthol/mol * \frac{1molAllyl-Naphthyl Ether}{1molNaphthol} * 184 gEther/mol = 0.7028 g

The <u>percent yield</u> is calculated using the theoretical yield and the experimental yield:

  • 0.59g / 0.7028 g * 100% = 83.95%
You might be interested in
Label the figure below with the names of a volcano's parts.
nexus9112 [7]

Answer:

Hello the answer for the volcanos is here below:

7. Pipe

8. Crater

9. Vent

10. lava flow

11. magma chamber

Hope this helps :)

4 0
2 years ago
Read the following chemical equations.
lora16 [44]

This problem is providing two reduction-oxidation (redox) reactions in which the oxidized and reduced species can be identified by firstly setting the oxidation number of each element:

Reaction 1: 2K⁺I⁻ + H₂⁺O₂⁻  ⇒2K⁺O⁻²H⁺ + I₂⁰

Reaction 2: Cl₂⁰ + H₂⁰ ⇒ 2H⁺CI⁻

Next, we can see that iodine is being oxidized and oxygen reduced in reaction #1 and chlorine is being reduced and hydrogen oxidized in reaction #2 because the oxidized species increase the oxidation number whereas the reduced ones decrease it.

In such a way, the correct choice is C.

Learn more:

  • (Redox reactions) brainly.com/question/13978139

8 0
2 years ago
Which ones are right to this question?
Vitek1552 [10]

The average Kenectic energy

7 0
3 years ago
1.15 g of a metallic element needs 300 cm3 of oxygen for complete reaction, at 298 K and 1 atm
sashaice [31]
1) Calculate the number of moles of O2 (g) in 300 cm^3 of gas at 298 k and 1 atm


Ideal gas equation: pV = nRT => n = pV / RT


R = 0.0821 atm*liter/K*mol

V = 300 cm^3 = 0.300 liter

T = 298 K

p = 1 atm


=> n = 1 atm * 0.300 liter / [ (0.0821 atm*liter /K*mol) * 298K] = 0.01226 mol


2) The reaction of a metal with O2(g) to form an ionic compound (with O2- ions) is of the type


X (+) + O2 (g) ---> X2O          or   


2 X(2+) + O2(g) ----> X2O2 = 2XO     or


4X(3+) + 3O2(g) ---> 2X2O3


 
In the first case, 1 mol of metal react with 1 mol of O2(g); in the second case, 2 moles of metal react with 1 mol of O2(g); in the third, 4 moles of X react with 3 moles of O2(g)



So, lets probe those 3 cases.


3) Case 1: 1 mol of metal X / 1 mol O2(g) = x moles / 0.01226 mol

=> x = 0.01226 moles of metal X


Now you can calculate the atomic mass of the hypotethical metal:

1.15 grams / 0.01226 mol = 93.8 g / mol


That does not correspond to any of the metal with valence 1+


So, now probe the case 2.



4) Case 2:


2moles X metal / 1 mol O2(g) = x / 0.01226 mol


=> x = 2 * 0.01226 = 0.02452 mol


And the atomic mass of the metal is: 1.15 g / 0.02452 mol = 46.9 g/mol


That is similar to the atomic mass of titanium which is 47.9 g / mol and whose valece is 2+.


4) Case 3


4 mol meta X / 3 mol O2 = x / 0.01226 => x = 0.01226 * 4 / 3 = 0.01635 


atomic mass = 1.15 g / 0.01635 mol = 70.33 g/mol


That does not correspond to any metal.


Conclusion: the identity of the metallic element could be titanium.
5 0
3 years ago
A physical property of a solid used to describe its surface
pantera1 [17]
The surface would be flat
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which is a substance that is made up of only one type of atom? compound element solution mixture
    6·2 answers
  • Which statement about electrons and atomic orbitals is not true? A. An electron has the same amount of energy in all orbitals. B
    5·2 answers
  • Which statement correctly describes protons? They have no charge and are present in the nucleus of an atom. They have a negative
    14·2 answers
  • The equilibrium constant for the reaction
    7·2 answers
  • How many hydrogen grams can be obtained if
    12·1 answer
  • Do this ill give u 20 points and Brainly
    5·2 answers
  • Which bond is most polar?
    5·1 answer
  • Which of the following best describes solids?
    14·2 answers
  • How many moles of Kl are needed to make 4.07 L of a 1.138 M solution?
    10·1 answer
  • Select the correct answer.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!