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irina1246 [14]
3 years ago
9

A large piece of iron was reacted with an acid. What would happen to the rate of the reaction had the large piece been finely di

vided into smaller pieces?
Chemistry
2 answers:
Anna007 [38]3 years ago
3 0
The reaction occurs in a similar way as magnesium does, but much less vigorous. Strong heating is required to make iron powder burn in oxygen. The reaction gives out a yellow showery sparks and produces a black solid. iron reacts with dilute hydrocloric acid to give iron chloride and hydrogen gas.
bekas [8.4K]3 years ago
3 0

For a reaction to occur there must be effective collision between the reactant molecules. When the iron or the reactant particles are finely divided that increases the surface area exposing more reactant particles on the surface and increase the rate of intermoleculer collision. The  greater effective collision between the reactant molecules the faster will the reaction occur.

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A sample of pure acetic acid, CH3COOH, contains 1.40x10^23 carbon atoms. How many moles of acetic acid are in the sample. Explai
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Taking into account the definition of Avogadro's number, 0.116 moles of acetic acid are in the sample.

<h3>Avogadro's Number</h3>

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

<h3>Amount of moles of acetic acid that contains 1.40×10²³ carbon atoms</h3>

Then you can apply the following rule of three: if 6.023×10²³ atoms are contained in 1 mole of carbon, then 1.40×10²³ atoms are contained in how many moles of carbon?

amount of moles of carbon= (1.40×10²³ atoms × 1 mole)÷ 6.023×10²³ atoms

<u><em>amount of moles of carbon= 0.232 moles</em></u>

So, the amount of moles of carbon in acetic acid that contains 1.40×10²³ carbon atoms is 0.232 moles.

On the other side, the small subscripts placed to the right of some symbol indicate the number of moles of the element that are found in the compound.

So, in pure acetic acid, CH₃COOH, are present 2 moles of carbon in 1 mole of acetic acid.

Then you can apply the following rule of three: if 2 moles of carbon are present in 1 mole of acetic acid, then 0.232 moles of carbon are contained in how many moles of acetic acid?

amount of moles of acetic acid=\frac{0.232 moles of carbonx1 mole of acetic acid}{2 moles of carbon}

<u><em>amount of moles of acetic acid= 0.116 moles</em></u>

In summary, 0.116 moles of acetic acid are in the sample.

Learn more about Avogadro's Number:

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brainly.com/question/1528951?referrer=searchResults

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