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juin [17]
3 years ago
6

Explain why the lattice energy and the energy of crystallization of a substance differ in sign but are equal in magnitude.

Chemistry
1 answer:
Ne4ueva [31]3 years ago
3 0

Answer:

Lattice energy is energy evolved when a crystal lattice is formed. Crystalization energy refers to energy supplied to collapse the lattice structure.

Explanation:

The lattice energy of an ionic crystal is defined in as the change in energy of the system of atoms and molecules when a crystal is formed from the free ionic forms of the components in the gas phase. It can also be defined as the necessary energy to separate ions of a mole of an ionic crystal as gaseous ions from each other by infinite distances.

The strength of ionic compounds is measured by the magnitude of lattice energy. It is the energy released when one mole of an ionic compound is formed. This means when the individual ions of the compound come together to form the crystal lattice, they need a lesser energy to remain together, hence energy is released, the energy released is called the lattice energy. The bond force between ions of opposite charge is strongest when the ions are small.

Similarly, the crystalization energy is the energy required maintain the crystal structure of the compound. It is also the energy that must be supplied for the crystal structure structure to collapse. Hence its sign is positive.

While lattice energy deals with energy evolved when ions come together to form a crystal, crystallization energy deals with energy absorbed to separate the ions and collapse the crystal structure

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what are we/what has someone did to prevent/lessen the negative side effects of aluminium extraction?
kogti [31]

Aluminum is one of the main factors that reduce plant growth in acid soils. Although it is generally harmful to plants in soils with a neutral medium, the concentration of positive aluminum ions in acid soils increases and malfunctions in root and function growth.

Most acid soils are saturated with aluminum rather than hydrogen ions. Soil acidity is the result of hydrolysis of aluminum compounds. This principle (lime correction) to determine the degree of base saturation in the soil has become the basis of the methods used in soil testing laboratories to determine the lime requirements for soil. Application of lime to soil reduces the toxicity of aluminum to plants. Note This connector loads slowly.

Adaptation of wheat to allow aluminum to be carried out is due to the fact that aluminum releases organic compounds that in turn combine with harmful aluminum cations. It is believed that sorghum has the same endurance. The first genes found to withstand aluminum were found in wheat. Aluminum sulphide bearing has been found to be governed by an individual gene, such as in wheat. This is not the case in all plants.

7 0
3 years ago
How does the concentration of reactants affect the rate <br>of Chemical reaction? explain in short​
Neporo4naja [7]
Higher concentration of reactants equals faster rate of reaction. Reactions occur when particles collide effectively, and by increasing the concentration of reactants, you increase the number of effective collisions, thereby making the reaction occur faster.
6 0
2 years ago
Read 2 more answers
Water's ________ specific heat makes it heat up and cool down slowly; this stability has helped water support life.
Valentin [98]

Answer:

high

Explanation:

8 0
3 years ago
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Carbon-14 has a half-life of 5,730 years. How long will it take for 112. 5 g of a 120. 0-g sample to decay radioactively? 5,730
vichka [17]

The time taken by Carbon-14 to decay radioactively from 120g to 112.5g is 22,920 years.

<h3>How do we calculate the total time of decay?</h3>

Time required for the whole radioactive decay of any substance will be calculated by using the below link:

T = (n)(t), where

  • t = half life time = 5730 years
  • n = number of half life required for the decay

Initial mass of Carbon-14 = 120g

Final mass of Carbon-14 = 112.5g

Left mass = 120 - 112 = 7.5g

Number of required half life for this will be:

  • 1: 120 → 60
  • 2: 60 → 30
  • 3: 30 → 15
  • 4: 15 → 7.5

4 half lives are required, now on putting values we get

T = (4)(5730) = 22,920 years

Hence required time for the decay is 22,920 years.

To know more about radioactive decay, visit the below link:

brainly.com/question/24115447

#SPJ1

3 0
2 years ago
Draw the product of the reaction between CH3CH=CHCH3 and H2 under a platinum catalyst.
Pani-rosa [81]

Answer:

CH₃CH₂-CH₂CH₃

Explanation:

When an alkene, R-CH=CH-R reacts with H₂ in a Pt catalyst, the analogue alkane, R-CH₂-CH₂-R, is produced (Hydrogenation of alkenes via Pt/Pd catalyst)

Thus, the reaction of CH₃CH=CHCH₃ with H₂ under a platinum catalyst produce:

<h3>CH₃CH₂-CH₂CH₃</h3>

The analogue alkane

4 0
3 years ago
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