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3 years ago

Does a catalyst increase reaction rate by the same means as a risen temperature does?

Chemistry

1 answer:

Maslowich3 years ago

4 0

Answer:

NO , The reaction rate cannot be same in both the cases.

Explanation:

The rate of a reaction is affected by various factors such as:

Temperature, pressure of the reactants, concentration of the reactants, surface area of the solid reactant, nature of the reactants and on the presence or absence of the catalyst.

The rate of a reaction is directly proportional to the temperature of the reactants, if the temperature(Kelvins) coefficient of the reactants is doubled the rate of the reaction is also doubled.
As the temperature increases the kinetic energy of the particles of the reactants increases which causes the particles to collide more rapidly causing the reaction to occur at a fast rate.

On the other hand the effect of catalyst is not similar to the the effect of the temperature on the rate of the reaction. As a catalyst reduces the threshold energy of reaction by increasing the number of the molecules of the reactants that will cause more kinetic energy of the molecules of the reactants which reduces the required activation energy for the reaction to occur.

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How many moles are in 25.90 grams of NaCl

inessss [21]

Answer:

0.44316859040048207mol

Explanation:

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2 years ago

What would be the mass of 9.03*10^21 molecules of hydrobromic acid

Fynjy0 [20]

Answer:

2.11 g hydrobromic acid (correct to 3SF)

Explanation:

Molecular formula of hydrobromic acid = C2H5BrO2

mass of C2H5BrO2 = 140.96g

Beginning with what we're given, 9.03*10^21 we then make a conversion by using Avegadro's number which is 6.02*10^23 per mole (Oct. 23 at 6:02 am is national mole day :) Then, we need to convert out of moles, 140.96g hydrombromic acid per mole.

It looks like this:

9.03*10^21 molecules • (1 mol C2H5BrO2 / 6.02*10^23 molecules) • (140g C2H5BrO2 / 1 mol) = 2.1144 g C2H5BrO2

3 0

3 years ago

Give the electron confiuration of Chromium (Cr), atomic number 24.

nadezda [96]

Chromium is a transition metal and it has 24 electrons and here is the orbital diagram. If we're going to make this short hand and make the electron configurationfor this we would make this 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d4 okay from now on every time you see 3d4 you're going to change it, we do not like 3d4.

4 0

3 years ago

Read 2 more answers

6. Write a balanced equation for each reaction. You must change each word equation into a chemical equation with actual formulas

leva [86]

The answer is in the pic!

4 0

3 years ago

When elemental boron, B, is burned in oxygen gas, the product is diboron trioxide. If the diboron trioxide is then reacted with

zalisa [80]

Answer: The chemical equation is written below.

Explanation:

Every balanced chemical equation follows law of conservation of mass.

This law states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form. This also means that total number of individual atoms on reactant side must be equal to the total number of individual atoms on the product side.

The chemical equation for the reaction of elemental boron and oxygen gas follows:

$4B+3O_2\rightarrow 2B_2O_3$

By Stoichiometry of the reaction:

4 moles of elemental boron reacts with 3 moles of oxygen gas to produce 2 moles of diboron trioxide.

The chemical equation for the reaction of diboron trioxide and water follows:

$B_2O_3+3H_2O\rightarrow 2H_3BO_3$

By Stoichiometry of the reaction:

1 mole of diboron trixoide reacts with 3 moles of water to produce 2 moles of boric acid.

Hence, the chemical equations are written above.

3 0

3 years ago