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3 years ago

Describe the three steps of solution formation. be sure to include the details regarding the dissolving of the substance

Chemistry

2 answers:

Elza [17]3 years ago

8 0

The three steps involve;

Step 1: Separation/expansion of the solute particles

Step 2: Separation/expansion of the solvent particles

Step 3; Combining the solute and solvent particles

The first two steps are usually endothermic. Step 3, nonetheless, can be either exothermic or endothermic and is significant in determining whether the dissolving process will be endothermic or exothermic.

IceJOKER [234]3 years ago

8 0

Answer:

The dissolution process is carried out in three completely independent stages:

1. Separation of solvent molecules

2. Separation of solute molecules.

3. Mixture of solvent and solute molecules.

Explanation:

A solution occurs when the solute and solvent molecules meet by intermolecular attractions, which should not be interpreted as chemical bonds. When a substance dissolves in another substance, the solute particles spread over the solvent. These particles break into positions occupied by solvent molecules. Its ease of replacement is dependent on the strength of three interactions: between solvent and solvent, between solute and solute, and between solvent and solute.

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Be sure to answer all parts.

Fudgin [204]

Answer:

2H₂ + O₂ → 2H₂O

Explanation:

Chemical equation:

H₂ + O₂ → H₂O

Balance chemical equation:

2H₂ + O₂ → 2H₂O

Step 1:

H₂ + O₂ → H₂O

Left hand side Right hand side

H = 2 H = 2

O = 2 O = 1

Step 2:

H₂ + O₂ → 2H₂O

Left hand side Right hand side

H = 2 H = 4

O = 2 O = 2

Step 3:

2H₂ + O₂ → 2H₂O

Left hand side Right hand side

H = 4 H = 4

O = 2 O = 2

7 0

3 years ago

1) Which term describes the conversion of substances into different substances?(1 point)

lara [203]

A chemical reaction occurs when substances change. Photosynthesis is the process by which plants produce food.

1) A chemical reaction is a process by which substances can be changed into other substances. Hence, in a chemical reaction, new substances are formed.

2) Photosynthesis is the process by which plants produce food using carbon dioxide and water in the process of sunlight and chlorophyll. Glucose is produced during photosynthesis and the energy produced and stored as starch.

3) Valence electrons show the kind of bond that an atom can form. Reaction between two atoms that have many valence electrons is most likely covalent. An ionic bond is formed between an atom that has few valence electrons and an atom that has many valence electrons.

4) A carbohydrate is a compound that comprises of hydrogen and oxygen in a ratio of 2:1. The compound that is a carbohydrate is C3H6O3.

5) Rocks contain iron. Iron oxides form when cyanobacteria produce oxygen via photosynthesis.

Learn more: brainly.com/question/1527403

8 0

3 years ago

What is the [OH-] of a solution whose pH=12.5

JulijaS [17]

Answer:

0.316

Explanation:

ph --> H+ --> Oh-

H+ = 10^-ph

= 10^-12.5

= 3.16 x 10^-13

now for oh-

oh - = 1 x 10^-14 / 3.16 x 10^-13

= .0316

8 0

3 years ago

Calculate the pH of a 0.2 M * 4 solution for which Kb = 1.8*10^-5 at 26 c . The equation for the reaction

lara31 [8.8K]

<u>Answer:</u> The pH of the solution is 11.24

<u>Explanation:</u>

We are given:

Molarity of ammonia = 0.2 M

$K_b=1.8\times 10^{-5}$

The given chemical equation follows:

$NH_3+H_2O\rightleftharpoons NH_4^++OH^-$

I: 0.2

C: -x +x +x

E: 0.2-x x x

The expression for equilibrium constant follows:

$K_b=\frac{[NH_4^+][OH^-]}{[NH_3]}$

Putting values in above expression, we get:

$1.8\times 10^{-5}=\frac{x^2}{0.2-x}\\\\1.8\times 10^{-5}(0.2-x)=x^2\\\\x^2+(1.8\times 10^{-5}x)-(0.36\times 10^{-5})=0\\\\x=1.88\times 10^{-3}, 1.9\times 10^{-3}$