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Nadya [2.5K]
3 years ago
14

What's catalyst. The properties of catalyst

Chemistry
2 answers:
AlexFokin [52]3 years ago
5 0

Answer:

Catalyst is a substance that increases the rate of a chemical reaction but is chemically unchanged at the end of the reaction.

properties of catalyst :

1. A catalyst increases the speed of a reaction, and it also improves the yield of the intended product.

2. A catalyst actually takes part in the reaction even though it itself is not consumed or used up in the course of the reaction.

3. A catalyst makes the reaction faster by providing an alternative pathway with a lower activation energy.

4. A catalyst is reaction-specific. It may not be effective in another reaction even if the two reactions are of similar type.

5. In a reversible reaction,  a catalyst accelerates both the forward and the reverse reactions. So, the inclusion of a catalyst does not alter the equilibrium constant of a reversible reaction.

kherson [118]3 years ago
5 0

Explanation:

a catalyst is a substance that changes the rate of reaction. there are three types organic or biocatalyst (enzymes), heterogeneous catalysts and homogeneous catalyst but it remains unchanged after the reaction.

properties:

  • it remains unchanged after the reaction.
  • it is ph specific
  • it is reaction specific
  • it improves the product yield
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Answer:

<h2>mass = 200.23 g</h2>

Explanation:

The density of a substance can be found by using the formula

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From the question

Density = 0.81 g/mL

volume = 247.2 mL

Substitute the values into the above formula and solve for the mass

mass = 0.81 × 247.2

= 200.232

We have the final answer as

<h3>mass = 200.23 g to 2 decimal places</h3>

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