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# Important Formulas for NEET - Chemistry LIVE
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Last updated date: 02nd Oct 2023
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## How to Learn the Important Formulas for NEET, Specifically Chemistry?

Here are some tips on how to learn chemistry formulas for NEET:

1. Understand the Fundamental Concepts: Chemistry formulas are based on fundamental concepts such as atomic structure, chemical bonding, and stoichiometry. It is crucial to have a good understanding of these concepts.

2. Practice Regularly: Chemistry formulas require constant practice. It is important to solve problems regularly to reinforce the concepts and formulas.

3. Make a List of Important Formulas: Make a list of the important formulas and keep them handy for quick reference. It is also helpful to create flashcards for memorisation.

4. Break Down Complex Formulas: Formulas that are too complicated can be scary. It is useful to separate them into more modest parts and see every part. This approach makes it easier to understand and remember the formula.

5. Use Mnemonics: Mnemonics are a great way to remember formulas. Creating a catchy phrase or acronym can help to remember the formula and its components.

6. Use Visual Aids: Complex formulas can be better understood with the help of diagrams and other visual aids. They make it easier to comprehend the formula by providing a clear visual representation of it.

7. Seek Help: If you are struggling with a particular formula, seek help from your teachers or peers. It is important to clarify any doubts and ensure a strong understanding of the formula.

## List of Physical Chemistry Formulas for NEET

Physical chemistry deals with the physical properties and behavior of chemical systems. Some of the important formulas in physical chemistry include:

1. Gas laws: ${PV = nRT}$ (ideal gas law), ${\dfrac{{PV}}{T} = k}$ (Gay-Lussac's law), ${\dfrac{{P1V1}}{{T1}} = \dfrac{{P2V2}}{{T2}}}$ (Boyle's law and Charles' law).

2. Thermodynamics: ${\Delta G = \Delta H - T\Delta S}$  (Gibbs free energy equation), ${\Delta H = q + P\Delta V}$ (enthalpy equation).

3. Electrochemistry: ${{{Ecell = }}{{{E}}^ \circ }{{cell}} - \left( {\dfrac{{0.0592}}{n}} \right)\log Q}$ (Nernst equation), ${\Delta {G^ \circ } = - nF{E^ \circ }{{cell}}}$ (Gibbs free energy equation for electrochemical reactions).

## List of Organic Chemistry Formulas for NEET

Organic chemistry deals with the study of carbon-based compounds and their reactions. Some important formulas in organic chemistry include:

1. Isomerism: ${{C_n}{H_{2n + 2}}}$ (alkanes), ${{C_n}{H_{2n}}}$ (alkenes), ${{C_n}{H_{2n - 2}}}$ (alkynes).

2. Hydrocarbons: ${{C_n}{H_{2n + 2}}}$ (alkanes), ${{C_n}{H_{2n}}}$ (alkenes), ${{C_n}{H_{2n - 2}}}$ (alkynes), ${{C_n}{H_{2n - 4}}}$ (arenes).

3. Functional groups: $R-OH$ (alcohols), $R-COOH$ (carboxylic acids), ${R - N{H_2}}$ (amines).

## List of Inorganic Chemistry Formulas for NEET

Inorganic chemistry deals with the study of non-carbon-based compounds and their reactions. Some important formulas in inorganic chemistry include:

1. Coordination compounds: ${\left[ {M\left( {{H_2}O} \right)n} \right]x + nL \to \left[ {M\left( {{H_2}O} \right)mLn} \right]x + }$ (formation of a complex ion), ${{{CFT:}}\Delta {{o = 10Dq}}}$ (crystal field theory equation).

2. Electrochemistry: ${{{{E}}^ \circ }{{cell}} = {{{E}}^ \circ }{\text{reduction}} - {{{E}}^ \circ }{\text{oxidation}}}$ (standard cell potential), ${\Delta {G^ \circ } = - nF{E^ \circ }\text{cell}}$ (Gibbs free energy equation for electrochemical reactions)

Here are some important formulas related to polymers that are relevant for NEET chemistry:

• Degree of Polymerization (DP): The degree of polymerization is the number of monomers in a polymer chain. It is calculated using the formula:

$\text{DP} = \dfrac{\text{Molecular weight of polymer}}{\text{Molecular weight of monomer}}$

• Polymerization Reaction: Polymerization is the process of creating polymers by combining monomers. The general formula for polymerization is:

${n\left( {C{H_2} = C{H_2}} \right) \to \left( { - C{H_2} - C{H_2} - } \right)n}$

This formula represents the polymerization of ethylene ${\left( {C{H_2} = C{H_2}} \right)}$ to form polyethylene ${\left( { - C{H_2} - C{H_2} - } \right)n}$.

• Repeat Unit: The repeat unit is the smallest unit that repeats in a polymer chain. It is important to identify the repeat unit to determine the structure and properties of the polymer. The formula for the repeat unit is determined by the monomer used in the polymerization reaction.

• Polydispersity Index (PDI): The polydispersity index is a measure of the molecular weight distribution of a polymer. It is calculated using the formula:

${{{PDI = }}\dfrac{{M_w}}{{M_n}}}$

Where $M_w$ is the weight average molecular weight and $M_n$ is the number average molecular weight.

• Tacticity: Tacticity refers to the arrangement of side groups on the polymer chain. The three types of tacticity are isotactic, syndiotactic, and atactic. The formula for the tacticity of a polymer depends on the monomer used and the arrangement of the side groups

## List of Ionic Equilibrium Formulas for NEET

The study of ionic equilibrium involves the use of a variety of formulas, which are used to calculate various properties of solutions containing ionic compounds. Some of the important formulas used in the study of ionic equilibrium include:

1. Ionic Product of Water: The ionic product of water is a measure of the concentration of the hydrogen ions and hydroxide ions in a solution. The formula for the ionic product of water is $K_w = [H^+][OH^-]$, where Kw is the ionic product of water, $[H^+]$ is the concentration of hydrogen ions, and $[OH^-]$ is the concentration of hydroxide ions.

2. Acid Dissociation Constant: The acid dissociation constant, also known as $K_a$, is a measure of the strength of an acid. The formula for $K_a$ is ${K_a = \dfrac{{\left[ {H^+ } \right]\left[ {A^-} \right]}}{{\left[ {H_A} \right]}}}$ , where $[H^+]$ is the concentration of hydrogen ions, $[A^-]$ is the concentration of the conjugate base, and $[H_A]$ is the concentration of the acid.

3. Base Dissociation Constant: The base dissociation constant, also known as $K_b$, is a measure of the strength of a base. The formula for $K_b$ is ${Kb = \dfrac{{\left[ {BH^+ } \right]\left[ {OH^- } \right]}}{{\left[ B \right]}}}$, where $[BH^+]$ is the concentration of the conjugate acid, $[OH^-]$ is the concentration of hydroxide ions, and $[B]$ is the concentration of the base.

4. pH: The pH is a measure of the acidity or basicity of a solution and is defined as the negative logarithm of the hydrogen ion concentration. The formula for pH is ${pH = - \log \left[ {H^+ } \right]}$.

5. pOH: The pOH is a measure of the concentration of hydroxide ions in a solution and is defined as the negative logarithm of the hydroxide ion concentration. The formula for ${pOH}$ is ${pOH = - \log \left[ {OH^- } \right]}$.

## Chemical Equilibrium

The state in which a chemical reaction's forward and reverse rates are equal is known as chemical equilibrium. To put it another way, this is the point at which the concentrations of the reactants and products stay the same over time.

The product and reactant concentrations at equilibrium are related by the equilibrium constant (Kc), a numerical value. The articulation for Kc is gotten from the fair substance condition for the response and addresses the proportion of the groupings of the items to the centralizations of the reactants at harmony.

The factors that affect chemical equilibrium include temperature, pressure, and concentration. Le Chatelier's guideline is utilized to foresee the course wherein a compound harmony will move in light of changes in these variables. For example, if the concentration of a reactant is increased, the reaction will shift in the direction that consumes that reactant, thus producing more products.

## Gaseous State

The ideal gas law is one of the most fundamental formulas in the study of gaseous state. It is given by ${PV = nRT}$, where P is the pressure of the gas, V is its volume, n is the number of moles of the gas, R is the universal gas constant, and T is the temperature of the gas. This law can be used to calculate any of the variables involved in the formula as long as the others are known.

Another important formula is the Boyle's law, which states that, at a constant temperature and mole count, a gas's pressure is inversely proportional to its volume. This law is expressed mathematically as $PV = k$, where k is a constant.

The Charles' law, on the other hand, describes the relationship between the number of moles and a gas's volume at a constant pressure and temperature. It is given by ${\dfrac{V}{T} = k}$, where k is a constant.

According to Avogadro's law, a gas's volume is directly proportional to its mole count at constant temperature and pressure.. Mathematically, it is expressed as ${\dfrac{V}{n} = k}$, where k is a constant.

The Dalton's law of fractional tensions expresses that the all out strain of a combination of gases is equivalent to the amount of the incomplete tensions of each gas. The pressure that a gas would exert if it were the only gas in the container is known as its partial pressure.

## Get the PDF of Important Formulas of Chemistry for NEET

Chemistry is a crucial subject for the National Eligibility cum Entrance Test (NEET) for admission to medical and dental courses in India. NEET chemistry includes three main branches: physical chemistry, organic chemistry, and inorganic chemistry. Each branch has its own set of formulas that students must memorise and understand in order to excel on the exam. In this article, we'll discuss important formulas of chemistry for NEET and tips for mastering them.

## Conclusion

NEET chemistry formulas are crucial for success on the exam. By regularly practicing, understanding the concepts, using memory aids, and seeking help when needed, students can effectively memorize and apply these formulas to solve complex problems.

Additionally, students can also seek help from their teachers and peers to clarify any doubts or difficulties they may have in understanding the formulas and concepts related to ionic equilibrium. With consistent practice and effort, students can master the formulas and excel in NEET chemistry examinations.

## FAQs on Important Formulas for NEET - Chemistry

1. What is the best way to learn NEET chemistry formulas?

The best way to learn NEET chemistry formulas is to practice them regularly. Make a list of all the important formulas and revise them daily. Understand the derivation of the formulas and try to apply them to solve problems. Also, try to understand the concept behind each formula, so that you can apply them in different situations.

2. Are all the NEET chemistry formulas important?

Yes, all the NEET chemistry formulas are important, and you should have a good understanding of them to score well in the exam. However, some formulas are more important than others, and you should prioritize them while studying.

3. How can I remember NEET chemistry formulas?

The best way to remember NEET chemistry formulas is to practice them regularly. Create a chart of all the formulas and revise them daily. You can also use flashcards or mnemonics to remember the formulas. It's important to understand the derivation of the formulas, as it can help you remember them better.