All categories

2 years ago

Why should impure zinc be used instead of pure zinc in preparation of hydrogen gas

2 answers:

5 0

Pure zinc is not used for the preparation of hydrogen gas because it is non-porous. As a result, the reaction carried out with pure zinc would be too slow. Hence impurities like copper is often added to the zinc. Copper acts as a catalyst ( by providing a large surface area ) and increases the speed of the reaction.

valina [46]2 years ago

3 0

Explanation:

Pure zinc is not used for preparation of hydrogen gas because it is non-porous. As a result, the reaction carried out with pure zinc would be too slow. Hence, impurities like copper is often added to the zinc. Copper acts as a catalyst and increases the speed of the reaction.

You might be interested in

Aluminum can react with oxygen gas to produce aluminum oxide (Al¿OÀ). What type of reaction is this?

nadya68 [22]

B.. it is a combination reaction... A + B--> AB

3 0

2 years ago

When a solid is placed in a container and heat is applied, a phase change occurs. Watch the video and identify which of the foll

sesenic [268]

Answer:

Explanation:"Watch the video and identify which of the following statements are correct." Excuse no video

4 0

2 years ago

Read 2 more answers

What is the molar mass of (NH), CO?<br> 138g<br> 788<br> 968<br> 1448

aleksandr82 [10.1K]

Answer:

The molar mass of $(NH_{4})_{2}CO_{3}$ is 96.8 g/mol

Explanation:

The given molecular formula - $(NH_{4})_{2}CO_{3}$

Individual molar masses of each element in the compound is as follows.

Molar mass of nitrogen - 14.01 g/mol

Molar mass of of hydrogen = 1.008g/mol

Molar mass of carbon = 12.01 g/mol

Molar mass of oxygen =16.00 g/mol

Molar mass of $(NH_{4})_{2}CO_{3}$ is

$2\times[1(14.01)+4(1.008)]+1(12.01)+3(16.00)= 96.8g/mol$

Therefore,The molar mass of $(NH_{4})_{2}CO_{3}$ is 96.8 g/mol

7 0

2 years ago

Where does the equilibrium point occur in a reaction system?

Ymorist [56]

Equilibrium occurs when the rate of the forward reaction is the same as the rate of the reverse reaction. This doesn't necessarily mean the concentrations or pressure are the same on both sides of the equation, only the rates are the same

8 0

2 years ago

if the solvent-solute interactions are weaker than the average of the solvent-solvent and solute-solute interactions, then heat

Alex777 [14]

If the solvent-solute interactions are weaker than the average of the solvent-solvent and solute-solute interactions, then heat is absorbed from the surroundings and the overall mixing process is said to be endothermic process.

The endothermic process can be defined as the process in which the reactants the will absorbed the heat from the surroundings . the heat is gained from the surrounding in the endothermic process and the surroundings temperature will decreases.

The solvent - solute interaction < solute - solvent interaction \and the solute solute interaction then the solution may be or may not be formed.

Thus, then heat is absorbed from the surroundings and the overall mixing process is called as endothermic process.

To learn more about interaction here

brainly.com/question/14797683

#SPJ4

3 0

6 months ago

Why should impure zinc be used instead of pure zinc in preparation of hydrogen gas​

Why should impure zinc be used instead of pure zinc in preparation of hydrogen gas