HURRY PLEASE!!! The hydrogenation of unsaturated hydrocarbons isan important industrial process. Precious metals,
such as platinum and palladium, can greatly
increase the rate of this reaction. During this
process, the gaseous reactants are pumped
across a layer of metal powder. An example of this
process is shown below.
Describe how the metal probably increases the
reaction rate, identify whether this is an example of
homogeneous or heterogeneous catalysis, and
explain how you know.
Answers
A reducible molecule undergoes hydrogenation when hydrogen is added to it. Alkenes, alkynes, and aromatic molecules that are unsaturated are converted into saturated products through the hydrogenation of hydrocarbons.
What is hydrogenation ?
A chemical reaction known as hydrogenation occurs when molecular hydrogen interacts with another substance or element, typically in the presence of a catalyst made of nickel, palladium, or platinum. The method is frequently used to saturate or decrease organic molecules.
With the aid of nickel or palladium catalysts, unsaturated hydrocarbons are added to hydrogen in this process to create saturated hydrocarbons. Example: Applying an addition reaction to ethane in the presence of catalysts like nickel or palladium allows for the conversion of ethane.
When making plastics, unsaturated hydrocarbons are incredibly helpful organic substances. Egg cartons, disposable cups, and other practical things are made of polystyrene. Alkenes are utilized in the production of industrial compounds like alcohol.
Thus, A reducible molecule undergoes hydrogenation when hydrogen is added to it.
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Answer: The metal probably increases reaction rate by either holding reactant molecules in the correct orientation to react or by weakening or breaking bonds in reactant molecules to make them more reactive. This is an example of heterogeneous catalysis.
Explanation: It is heterogeneous catalysis because the catalyst is a solid and the reactants are gases. In heterogeneous catalysis, the catalyst is in a different phase than the reactants.
Related Questions
Given the balanced equation representing a reaction:H2O + HCl ==> H3O+ + Cl- According to one acid-base theory, the H2O molecule (1) accepts H+ ions (3) donate H+ ions (2) accepts OH- ions (4) donates OH- ions
Why cant scientists use carbon -14 to determine the age of an igneous rock?
Describe the day of June 21 at the North Pole in terms of daylight and darkness ( science )
What does it mean for a backyard ecosystem to have a low diversity
Answers
The standard units of measurement are particularly important to scientists because they make the result more accurate and precise.
What are accuracy and precision?
When the average value of the different measurements is similar to the correct value then the measurement is said to be accurate and the phenomenon is said to be accurate.
When the values of measurement are close to each other then the result is said to be precise and the phenomena are said to be precise and need to do for the better accuracy of results.
Therefore, they make the result more accurate and precise.The standard units of measurement are particularly important to scientists.
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Answer:
Explanation: The standred units of measurments are important to scientists because they are the same measurments that all scientist take to make sure that they all have the correct results.
A. Elements cannot be broken down into simpler substances.
B. Elements are represented by chemical formulas.
C. Elements are pure substances.
D.Elements can combine chemically to form compounds.
Answers
Answer:
It is B.
All the other answers are true.
A element can not be simpler
Final answer:
The correct answer is B. Elements are represented by chemical formulas.
Explanation:
Out of the given options, the correct answer is B. Elements are represented by chemical formulas.
Chemical formulas are used to represent compounds, not elements. Elements are pure substances that are made up of only one type of atom and cannot be broken down into simpler substances. They are represented by their chemical symbols, such as H for hydrogen and O for oxygen.
For example, water is a compound made up of two elements: hydrogen and oxygen. The chemical formula for water is H2O, where H represents hydrogen and O represents oxygen.
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Answers
2nd law: law of acceleration: the momentum experienced by an object is proportional to the size and direction of the force.
3rd law: law of action and reaction: for every action there is an equal and opposite reaction.
Answers
Answer:
86.04 %
Explanation:
Data given:
mass of Al = 160.0 g
actual yield Al₂O₃= 260 g
Theoretical yield = ?
percent yield ofAl₂O₃ = ?
Solution:
First we have to find theoretical yield.
So,
we Look at the balanced reaction
4Al + 3O₂ -----—> 2Al₂O₃
4 mol 2 mol
As 4 mole of Al give 2 mole of Al₂O₃
Convert moles to mass
molar mass of Al = 27 g/mol
molar mass of Al₂O₃ = 2(27) + 3(16)
molar mass of Al₂O₃ = 54 + 48
molar mass of Al₂O₃ = 102 g/mol
Now
4Al + 3O₂ -----—> 2Al₂O₃
4 mol (27g/mol) 2 mol (102 g/mol)
108 g 204 g
108 grams of Al produce 204 g of Al₂O₃
So
if 108 grams of Al produce 204 g of Al₂O₃ so how many grams of Al₂O₃will be produced by 160 g of Al.
Apply Unity Formula
108 grams of Al ≅ 204 g of Al₂O₃
160 grams of Al ≅ X of Al₂O₃
Do cross multiply
mass of Al₂O₃= 204 g x 160 g / 108 g
mass of Al₂O₃ = 302.2 g
So the Theoretical yield of Al₂O₃ = 302.2 g
Now Find the percent yield of Al₂O₃
Formula Used
percent yield = actual yield /theoretical yield x 100 %
Put value in the above formula
percent yield = 260g / 302.2 g x 100 %
percent yield = 86.04 %
percent yield of Al₂O₃ = 86.04 %
Answers
Answer:
liquid.
Explanation:
At room temperature, a liquid is, well a liquid, but if you heat it up, it will evaporate into a vapor.
Final answer:
Usually, substances that form a vapor at room temperature are in the liquid or solid state. This happens because of evaporation (in liquids) and sublimation (in solids).
Explanation:
A substance that forms a vapor is typically in a liquid or solid state at room temperature. This is due to the process called Evaporation for liquids and Sublimation for solids. Evaporation is when a substance changes from a liquid to a gas at temperatures below its boiling point. Sublimation, on the other hand, is when a solid changes directly to gas without passing through a liquid stage. These processes can happen at room temperature, depending on the substance.
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(2) The rate of the forward reaction must equal the rate of the reverse reaction.
(3) The concentration of the reactants must equal the concentration of the products.
(4) The potential energy of the reactants must equal the potential energy of the products.
Answers
Answer: The correct answer is Option 2.
Explanation:
Reversible reaction is defined as the reaction in which the products formed react together to give the reactants back. For general reversible chemical equation:
At equilibrium, the rate of forward reaction is equal to the rate of backward reaction.
Rate of forward reaction:
Rate of backward reaction:
At equilibrium, =
Thus, the correct answer is Option 2.