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3 years ago

Explain the various factors that impact the solubility of substances in water.

Chemistry

2 answers:

Mashutka [201]3 years ago

5 0

Answer

Hi, the factors are;

Temperature

molecular size of solute

stirring

Explanation

An increase in temperature increases the solubility rate.Large solute molecules have larger molecular weight and size, thus less soluble. Stirring increases the speed of the dissolving process. In addition, polarity affects solubility in that solutes dissolve in solvents that share similar polarity.

All the best!

Andreyy893 years ago

5 0

Answer: Temperature, Molecular Size of the particle, Polarity, Stirring

Explanation: Solubility of substances in water depends upon the below mentioned factors -

1. Temperature - Higher the temperature, higher will be the kinetic energy of the particles which will move in random directions. Thus the particle will nt remain as precipitate in the solution and will try to get dissolved.

2. Molecular Size of the particle - It is more difficult for the solvent to dissolve the particle with large molecular size as it will take high temperature to get dissolved.

3. Polarity - 'Like dissolves like' explains the polarity concept of the solubility. It means that the non polar solute will get dissolved in non polar solvents and polar solutes will get dissolved in polar solvents only.

4. Stirring - Stirring only helps to increase the speed of the process of solubility. It has nothing to do with the substance.

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ale4655 [162]

Answer:

1. The electronic configuration of X is: 1s2 2s2 sp6 3s2

2. The configuration of the anion of Y (i.e Y^2-) is 1s2 2s2 2p6

3. The formula of the compound form by X and Y is given as: XY

Explanation:

For X to loss two electrons, it means X is a group 2 element. X can be any element in group 2. The electronic configuration of X is:

1s2 2s2 sp6 3s2

To get the electronic configuration of the anion of element Y, let us find the configuration of element Y. This is done as follows:

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The configuration of the anion of Y (i.e Y^2-) is 1s2 2s2 2p6

The formula of the compound form by X and Y is given below :

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3 years ago

Which elements have the most similar chemical properties

gtnhenbr [62]

Answer:

Elements that belong to the same GROUP of the periodic table have the most similar chemical properties.

Explanation:

A GROUP in the periodic table is a column of elements with the same number of valence electrons. Since electrons are exchanged/shared during a chemical reaction, then elements with similar valence electrons, will react similarly. Thus elements belonging to the same GROUP are most similar in the way they react.

For example: Sodium and Lithium are group 1 elements while fluorine and chlorine are group 17 elements. In a reaction under normal conditions, Sodium and Lithium will both try to give up their single valence electron to form cations. In doing so they will react more similarly. On the other hand, Fluorine and Chlorine who are more inclined to accept a single electron to form cations react less like the group 1 elements and more like each other.

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A 1.28-kg sample of water at 10.0 °C is in a calorimeter. You drop a piece of steel with a mass of 0.385 kg at 215 °C into it. A

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Answer:

$T_{2}=16,97^{\circ}C$

Explanation:

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$Cp_{w}=4.186 \frac{KJ}{Kg^{\circ}C}$

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Assuming that the water and steel are into an adiabatic calorimeter (there's no heat transferred to the enviroment), the temperature of both is identical when the system gets to the equilibrium $T_{2}_{w}= T_{2}_{s}$

An energy balance can be written as

$m_{w}\times Cp_{w}\times (T_{2}- T_{1})_{w}= -m_{s}\times Cp_{s}\times (T_{2}- T_{1})_{s}$

Replacing

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Then, the temperature $T_{2}=16,97^{\circ}C$

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