Question

Name some important formulae with their name !!

Chapter - Chemical Reactions and Equations

Note - At least 15 formula ✅
No Spam ❎❎
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Answer 1

Answer:

NaHCO3 (Sodium Bicarbonate)

CaOCL2 (Calcium Oxychloride)

KOH (Potassium Hydroxide)

NaOH (Sodium Hydroxide)

CaCo3 (Calcium Carbonate)

MgO (Magnesium oxide)

N2O (Nitrous oxide)

ZnSo4 (Zinc Sulphate)

SiO2 (Silicon Oxide)

CH4 (Methane)

MgSo4 (Magnesium Sulphate)

FeSo4 (Ferrous sulphate)

CaSo4 (Calcium Sulphate)

CH3COOH ( Acetic acid)

Na2CO3 (Sodium Carbonate)

Explanation:

I hope this will help you.

Answer 2

★ Solution :-

Before proceeding with the reactions, we must understand different types of chemical abbreviations.

• (s) = solid state

• (l) = liquid state

• (g) = gaseous state

• (aq) = aqueous state

• ∆ = Heat

Reactions and equations ::

• Skeletal Equation : It is a type of chemical equation where the reaction is not balanced and the states of the elements are not mentioned. For example -

$\;\tt{\mapsto\;\;\green{H_{2}\;+\;O_{2}\;\longrightarrow\;\;H_{2}O}}$

• Here H is Hydrogen atom

• Here H₂O is water

• Balanced Chemical Equation : In this type of chemical equation, the elements are balanced and the states of the elements are also mentioned along with them. For example -

$\;\tt{\mapsto\;\;\pink{C_{(s)}\;+\;O_{2\;(g)}\;\longrightarrow\;\;CO_{2\;(g)}}}$

• Here C is Carbon Atom

• Here O is Oxygen Atom

• Here CO₂ is Carbon Dioxide

• Combination Reation : In this type of chemical reaction, two/more atoms/molecules of different elements/different compounds/different compounds/an element and a compound react with each other to form a single product. For example -

$\;\tt{\mapsto\;\;\orange{CaO_{(s)}\;+\;H_{2}O_{(l)}\;\longrightarrow\;\;Ca(OH)_{2\;(aq)}}}$

• Here CaO is Calcium Oxide

• Here H₂O is Water

• Here Ca(OH)₂ is Calcium Hydroxide

$\;\tt{\mapsto\;\;\orange{H_{2\;(g)}\;+\;Cl_{2\;(g)}\;\longrightarrow\;\;2HCl_{(g)}}}$

• Here Cl₂ is Chlorine

• Here HCl is Hydrochloric gas

• Exothermic Reaction : It is a type of reaction in which heat and light energy is given out as the reaction goes on and product is formed. For example -

$\;\tt{\mapsto\;\;\blue{CH_{4\;(g)}\;+\;2O_{2\;(g)}\;\longrightarrow\;CO_{2\;(g)}\;+\;2H_{2}O_{(g)}\;+\;Heat\;+\;Light}}$

• Here CH₄ is Methane

• Endothermic Reaction : It is a type of reaction in which heat and light energy is taken in for the reaction to take place. For example -

$\;\tt{\mapsto\;\;\blue{2Mg_{(s)}\;+\;O_{2\;(g)}\;+\;Heat\;+\;Light\;\longrightarrow\;2MgO_{(s)}}}$

• Here Mg is Magnesium

• Here MgO is Magnesium Oxide

• Decomposition Reaction : It is a type of reaction in which one compound breaks down into two or more different atoms or molecules by the action of heat energy, light (sunlight) energy or electrical energy.

>> By Heat ::

$\;\tt{\mapsto\;\;\red{CaCO_{3\;(s)}\;+\;\Delta\;\longrightarrow\;CaO_{(s)}\;+\;CO_{2\;(g)}}}$

• Here CaCO₃ is Calcium Carbonate

>> By Sunlight ::

$\;\tt{\mapsto\;\;\red{2AgCl_{(s)}\;+\;light\;\longrightarrow\;2Ag_{(s)}\;+\;Cl_{2\;(g)}}}$

>> By Electrical Energy ::

$\;\tt{\mapsto\;\;\red{2H_{2}O_{(l)}\;+\;Electricity\;\longrightarrow\;2H_{2\;(g)}\;+\;O_{2\;(g)}}}$

• Displacement Reaction : In this type of reaction, an element with higher reactivity takes place of the element with lower reactivity from the later's aqueous solution.

$\;\tt{\mapsto\;\:\purple{Fe_{(s)}\;+\:CuSO_{4\;(aq)}\;\longrightarrow\;FeSO_{4\;(aq)}\;+\;Cu_{(s)}}}$

• Here Fe is Iron

• Here CuSO₄ is Copper Sulphate.

• Here FeSO₄ is Ferrous Sulphate

• Here Cu is Copper

$\;\tt{\mapsto\;\:\purple{Zn_{(s)}\;+\:CuSO_{4\;(aq)}\;\longrightarrow\;ZnSO_{4\;(aq)}\;+\;Cu_{(s)}}}$

• Here Zn is Zinc

• Here ZnSO₄ is Zinc Sulphate

• Double Displacement Reaction : In this type of reaction an ion or group of atoms exchange each other's place in their aqueous solutions. For example -

$\;\tt{\mapsto\;\;\green{Na_{2}SO_{4\;(aq)}\;+\;BaCl_{2\;(aq)}\;\longrightarrow\;BaSO_{4\;(s)}\;+\;2NaCl_{(aq)}}}$

• Here Na₂SO₄ is Sodium Sulphate

• Here BaSO₄ is Barium Sulphate

• Here BaCl₂ is Barium Chloride

• Here NaCl is Sodium Chloride

$\;\tt{\mapsto\;\;\green{Na_{2}SO_{3\;(aq)}\;+\;BaCl_{2\;(aq)}\;\longrightarrow\;BaSO_{3\;(s)}\;+\;2NaCl_{(aq)}}}$

• Here NaSO₃ is Sodium Sulphite

• Here BaSO₃ is Barium Sulphite

• Oxidation Reaction : It is a reaction in which there is an addition of oxygen atom to the product or there is a loss of hydrogen atom from reactant as product. For example -

$\;\tt{\mapsto\;\;2Cu_{(s)}\;+\;O_{2\;(g)}\;+\;\Delta\;\longrightarrow\;2CuO_{(s)}}$

• Here CuO is Copper (II) Oxide

• Reduction Reaction : It is a reaction in which there is an addition of hydrogen atom to the product or there is a loss of oxygen atom from the reactant as product. For example -

$\;\tt{\mapsto\;\;CuO_{(s)}\;+\;H_{2\;(g)}\;\longrightarrow\;Cu_{(s)}\;+\;H_{2}O_{(l)}}$

Actually there's no reaction where oxidation takes place seperately. Here we have mentioned two reactions just because seeing the quantity of oxidation and reduction.

• Redox Reaction : It is a reaction where both oxidation and reduction takes place simultaneously. In general if one element or molecule gets oxidised then another element or molecule gets reduced.

$\;\tt{\mapsto\;\;ZnO_{(s)}\;+\;C_{(s)}\;\longrightarrow\;Zn_{(s)}\;+\;CO_{(g)}}$

• Here ZnO is Zinc Oxide

• Here CO is Carbon Monoxide

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★ How to write a chemical equation ::

• Write the word equation of the reaction.
• Insert symbols and chemical symbols.
• Balance the equation from both sides.
• Finally, write the states of the reactants and products.