What is a common use of bases?

Answers

Answer 1

Answer: A base is a substance that is capable of donating hydroxide ions or electrons or accepts protons. Some of the common bases are found at home. Lye (active ingredient in oven cleaners) and soaps are some of the examples. Bases are used to neutralize acids, they are used as cleaning agents and are used to manufacture paper and synthetic fiber.

Answer 2

Answer:

The common uses of base if for the formation of salts in a neutralisation reaction.

What is neutralisation reaction?

Neutralisation reaction is a type of chemical reaction whereby salt and water is formed from the reaction of an acid and a base.

For example the reaction between NaOH and HCl leads to the formation of a salt called NaCl.

Therefore, the common uses of base if for the formation of salts in a neutralisation reaction.

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What is the value for ΔSºreaction for the following reaction, given the standard entropy values? Al2O3(s) + 3H2(g) → 2Al(s) + 3H2O(g) –35 J/mol*K +35 J/mol*/K +179 J/mol*K –179 J/mol*K

Answers

Let me help you by giving the formula as it will be more useful for you. $delta S = Sum(n) (Delta S(products)) - Sum(m)(Delta S(reactants))$ . There are m and n in formula that are coefficients of the reactants and products that are given in the equation.

The answer is C just got it right

Are hydrogen bonds formed between all molecules?1.) No because hydrogen can only form these bonds with oxygen atoms.
2.) No because hydrogen can only form these bonds with highly electronegative atoms.
3.) Yes because hydrogen can easily form bonds with atoms that have a neutral charge.
4.) Yes because hydrogen can form these bonds with weakly electronegative atoms.

Answers

The correct statement for the given problem is $\boxed{{\text{2)}}\;{\text{No because hydrogen can only form these bonds with highly electronegative atoms}}}$

Further Explanation:

Intermolecular forces:

The forces that exist between the molecules are known as intermolecular forces (IMF). IMF includes both attractive as well as repulsive forces. They are electrostatic in nature and determine the bulk properties of the substances like melting and boiling points. Molecules are held in any substance due to these forces.

The various types of intermolecular forces are as follows:

1. Hydrogen bonding:

It is an attractive force that exists between hydrogen and more electronegative elements like N, O, F. It can either be intermolecular or intramolecular. Intermolecular hydrogen bonding is the one that occurs between different molecules. For example, the bond between HF and ${{\text{H}}_{\text{2}}}{\text{O}}$ is an intermolecular hydrogen bond. Intramolecular hydrogen bonding occurs between various parts of the same molecule. Ortho-nitro phenol and salicylaldehyde show this type of bonding.

2. Ion-dipole forces:

It is an attractive force that occurs between an ion and a molecule consisting of a dipole. The force between ${\text{N}}{{\text{a}}^ + }$ and water molecule is an example of this force.

3. Ion-induced dipole forces:

It is an attractive force that occurs between an ion and a nonpolar molecule. It induces a dipole in the molecule, resulting in ion-induced dipole force. The bond between ${\text{F}}{{\text{e}}^(2 + )}$ and oxygen molecule is an example of such kind of bond.

4. Dispersion forces:

Also known as London dispersion forces, van der Waals forces, instantaneous dipole-induced dipole forces. These forces exist between atoms and molecules. The forces that occur in ${{\text{F}}_2}$ molecule is a dispersion force.

(1) Hydrogen bond is the one formed between the highly electronegative atom and hydrogen. Although oxygen is a highly electronegative element, it also forms hydrogen bonds with hydrogen. But it there are also more electronegative elements, other than O that can form hydrogen bonds with hydrogen. So this statement (1) is incorrect.

(2) As is clear from the definition of hydrogen bonds, it is formed between highly electronegative elements (like F, O, and N) and hydrogen. So this statement (2) is correct.

(3) Hydrogen bonding is formed as the result of interaction between and an element that can induce a dipole in hydrogen. But neutral atom cannot induce any charge on hydrogen atom. So this statement (3) is incorrect.

(4) Hydrogen can form bonds with high electronegative elements and not with the weak electronegative elements. So the given statement (4) is incorrect.

Learn more:

1. Identification of ionic bonding: brainly.com/question/1603987

2. What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ionic and covalent compounds

Keywords: bond, oxygen, F, N, O, hydrogen bond, hydrogen, highly electronegative element, intermolecular forces, ion-dipole, ion-induced dipole, dispersion forces, attractive, repulsive, correct, incorrect, weakly electronegative.

No, hydrogen can only form these bonds with highly electronegative atoms. Therefore, the correct option is option 2.

When an electronegative atom is attracted to another electronegative atom nearby, a hydrogen atom that is covalently bound to a highly electronegative atom forms a hydrogen bond. This attraction results from variations in electronegativity values, which unbalances the distribution of electrons. While the electronegative atom acquires a partial negative charge, the electron-deficient hydrogen becomes weakly positively charged. The electromagnetic attraction between these partially positive and partially negative ions is known as a hydrogen bond, and it is quite powerful.

Therefore, the correct option is option 2.

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Which participates in chemical reactions?electrons
protons
neutrons
gamma rays

Answers

I think the correct answer is electrons. All chemical reactions are dependent on the transfer of electrons. Other subatomic particles are located in the innermost portion of an atom and are bonded strongly with each other.

Answer: Option (a) is the correct answer.

Explanation:

A chemical reaction is the reaction that involves gain and loss of electrons due to which there is formation of new compounds or products.

Foe example, $HCl + NaOH \rightarrow NaCl + H_(2)O$

That is, in chemical reactions change in oxidation state of reactants occur.

Hence, we can conclude that out of the given options electrons participates in chemical reactions.

A faster pulse rate results in a _____ overall heat input. Answer options are 1. Higher or 2. Lower

Answers

a faster pulse rate results in a higher overall heat input

Answer:

higher

Explana

CH3COOH mc015-1.jpg CH3COO– (aq) + H+(aq) What will happen to the chemical equilibrium of the solution if CH3COONa is added?

Answers

The equilibrium will shift to the left or the backward reaction since addition of CH3COONa will add more CH3COO- ions to the solution. The formation of reactants are promoted.

To show the electron configuration for an atom, what is the advantage of using an orbital notation compared to a dot structure? Orbital notation takes up less space. Orbital notation shows the spin of the electrons. Orbital notation makes it easier to count the electrons. Orbital notation shows the electron distribution in shells.

Answers

Correct answer: Option B i.e. Orbital notation shows the spin of the electrons.

Reason:
Dot diagram provides only the electrons that are present in valance shell. Furthermore, it provides no information about the electron spin. On other hand, orbital notation is writing taking into consideration aufbau principle, Hund's rule and Pauli's exclusion principle. Hence, it provides correct description of electron distribution of electrons in atoms. Furthermore, orbital notation shows the spin of the electrons.

Answer: The correct answer is Orbital notation shows the spin of the electrons.

Explanation:

Advantages of Orbital notation :

One can easily count total numbers of electron in an atom
It conveys the distribution of electrons in the shells.
It also tells us about the spin of the electrons.

Where as spin of the electrons is not conveyed by the electron dot structure.

Hence, the corrects answer is : Orbital notation shows the spin of the electrons.

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