What is meant by chemical equation ?

What is meant by chemical equation ?
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The equation used to summarize a chemical reaction is called a chemical equation.
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What is meant by skeltal type chemical equation? What does it represent? Using the equation for electrolytic decomposition of water, differentiate between a skeltal chemical equation and a balanced chemical equation. -Chemistry

Description : What is meant by skeltal type chemical equation? What does it represent? Using the equation for electrolytic decomposition of water, differentiate between a skeltal chemical equation and a balanced chemical equation. -Chemistry

Last Answer : Answer. The equations in which gaseous are written in atomic form instead of molecular form and equation is not balanced, are called skeltal type equation. They represent gaseous elements formed in atomic state and equation is not balanced

Which products will be obtained when lead nitrate is heated simply. Write balanced chemical equation for the reaction? State the type of chemical reaction that occur in the change. -Chemistry

Description : Which products will be obtained when lead nitrate is heated simply. Write balanced chemical equation for the reaction? State the type of chemical reaction that occur in the change. -Chemistry

Last Answer : Answer. Lead monoxide, nitrogen dioxide and oxygen gas will be liberated. It is thermal decomposition reaction.

Write chemical equation reactions taking place when carried out with the help of (a) Iron reacts with steam (b) Magnesium reacts with dil HCl (c) Copper is heated in air. -Chemistry

Description : Write chemical equation reactions taking place when carried out with the help of (a) Iron reacts with steam (b) Magnesium reacts with dil HCl (c) Copper is heated in air. -Chemistry

Last Answer : This is the Answer.

What is observed when a solution of potassium iodide solution is added to a solution of lead nitrate? Name the type of reaction. Write a balanced chemical equation to represent the above chemical reaction. -Chemistry

Description : What is observed when a solution of potassium iodide solution is added to a solution of lead nitrate? Name the type of reaction. Write a balanced chemical equation to represent the above chemical reaction. -Chemistry

Last Answer : Answer.Yellow precipitate of lead iodide is formed. It is precipitation reaction. Pb( NO3)2 (aq) + 2KI (aq) —-> Pbl2 (s) + 2KNO3 (aq) It is also called double displacement reaction.

(a) Write the essential condition for the following reaction to take place: 2AgBr—-> 2Ag + Br2 Write one application of this reaction. (b) Complete the following chemical equation of a chemical reaction 2FeS04 — chemical-reactions-and-equations-chapter-wise-important-questions-class-10-science-5 (c) What happens when water is added to quick line. Write chemical equation. -Chemistry

Description : (a) Write the essential condition for the following reaction to take place: 2AgBr--> 2Ag + Br2 Write one application of this reaction. (b) Complete the following chemical equation of a chemical ... science-5 (c) What happens when water is added to quick line. Write chemical equation. -Chemistry

Last Answer : Answer. This reaction is used in photography. (c) Slaked lime is formed with hissing sound and lot of heat is envolved.

(a) Define a balanced chemical equation. Why should an equation be balanced? (b) Write the balanced chemical equation for the following reaction: (i) Phosphorus burns in presence of chlorine to form phosphorus penta chloride. (ii) Burning of natural gas. (iii) The process of respiration. -Chemistry

Description : (a) Define a balanced chemical equation. Why should an equation be balanced? (b) Write the balanced chemical equation for the following reaction: (i) Phosphorus burns in presence of chlorine to form phosphorus penta chloride. (ii) Burning of natural gas. (iii) The process of respiration. -Chemistry

Last Answer : Answer. (a) Balanced chemical equation has an equal number of atoms of different elements in the reactants and products. According to law of conservation of mass, matter can neither be created nor be destroyed in a chemical ... C6H12O6 (s) + 6O2 (g) + 6H2O ---> 6CO2 (aq) + 12H2O (l) + energy

2g of ferrous sulphate crystals are heated in a dry boiling tube. (i) List any two observations. (ii) Name the type of chemical reaction taking place. (iii) ‘Write the chemical equation for the reaction. -Chemistry

Description : 2g of ferrous sulphate crystals are heated in a dry boiling tube. (i) List any two observations. (ii) Name the type of chemical reaction taking place. (iii) ‘Write the chemical equation for the reaction. -Chemistry

Last Answer : Answer. (i) •Green colour of Fe SO4 disappears and reddish brown solid is formed. • Smell of burning sulphur. (ii) Decomposition reaction

Write the chemical equation of the reaction in which the following changes have taken place with an example of each: (i) Change in colour (ii) Change in temperature (iii) Formation of precipitate -Chemistry

Description : Write the chemical equation of the reaction in which the following changes have taken place with an example of each: (i) Change in colour (ii) Change in temperature (iii) Formation of precipitate -Chemistry

Last Answer : (i)Cu (s) + 2AgNO3 (aq)———–> Cu(NO3)2(aq) + 2Ag The solution will become blue in colour and shiny silver metal will be deposited. (ii) NaOH + HCl ——&mdash ... )———–> Pbl2 (s) + 2KNO3 (aq) Yellow ppt Yellow precipitate of Pbl2will be formed.

A Name the type of chemical reaction represented by the following equation: -Chemistry

Description : A Name the type of chemical reaction represented by the following equation: -Chemistry

Last Answer : Answer. (i) Combination reaction (ii) Double displacement reaction (Precipitation reaction) (iii) Decomposition reaction.

i) Write a balanced chemical equation for process of photosynthesis. (ii)When do desert plants take up carbon dioxide and perform photosynthesis? -Chemistry

Description : i) Write a balanced chemical equation for process of photosynthesis. (ii)When do desert plants take up carbon dioxide and perform photosynthesis? -Chemistry

Last Answer : Answer. (ii) In desert plants the stomata are open at night. They take CO2 at night and is stored in the form of acid and is used during day time for photosynthesis.

Giving an example list two information which make a chemical equation more useful (informative). -Chemistry

Description : Giving an example list two information which make a chemical equation more useful (informative). -Chemistry

Last Answer : (i) Physical state of reactants must be mentioned, e.g. 2H2 (g) + O2 (g)--- > 2H20 (l) (ii) Condition in which reaction takes place are written on the arrow head, e.g. ... BaCl2--> BaSO4 + 2NaCl (White ppt) The reaction is precipitation reaction. It is also called double displacement reaction.

“We need to balance a skeltal chemical equation.” Give reason to justify the statement. -Chemistry

Description : “We need to balance a skeltal chemical equation.” Give reason to justify the statement. -Chemistry

Last Answer : Skeltal chemical equation are unbalanced. We need to balance chemical equation because of law of conservation of mass. It states that ‘matter can neither be created nor be destroyed’. Therefore chemical equation must be balanced in each and every chemical reaction.

Explain why calcium metal after reacting with water starts floating on its * surface. Write the chemical equation for the reaction. Name one more metal that starts floating after some time when immersed in water. -Chemistry

Description : Explain why calcium metal after reacting with water starts floating on its * surface. Write the chemical equation for the reaction. Name one more metal that starts floating after some time when immersed in water. -Chemistry

Last Answer : Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of metal. Magnesium reacts with hot water and starts floating due to the bubbles of hydrogen gas sticking to its surface.

10.(a) An ore on treatment with dilute hydrochloric acid produces brisk effervesces. What type of ore is this? What steps will be required to obtain metal from the enriched ore. , (b) Copper coin is kept immersed in silver nitrate solution for some time. What change will take place in coin and colour of the solution ? Write balanced chemical equation of the reaction involved. -Chemistry

Description : 10.(a) An ore on treatment with dilute hydrochloric acid produces brisk effervesces. What type of ore is this? What steps will be required to obtain metal from the enriched ore. , (b) ... in coin and colour of the solution ? Write balanced chemical equation of the reaction involved. -Chemistry

Last Answer : (a) Carbonate ore: (i) Calcination: Carbonate ore is heated in limited supply of air and oxide is obtained, e.g. (b) Copper, being more reactive than silver will displace silver from silver nitrate ... and there will be deposition of silver on copper coin. The colour of solution will turn to blue.

What is the thermal chemical equation ? What is the thermal chemical equation ?

Description : What is the thermal chemical equation ? What is the thermal chemical equation ?

Last Answer : The chemical equation which expresses the physical state of each reactant and product with special symbols, including the amount of heat generated or absorbed by the reaction, is called thermal chemical equation.

Write an expression in the form of chemical equation for the standard enthalpy of formation (∆Hf) of CO (g).

Description : Write an expression in the form of chemical equation for the standard enthalpy of formation (∆Hf) of CO (g).

Last Answer : Ans. C(s) +1/2 O2(g) → CO (g)

(a) Why is it necessary to balance a chemical equation? (b)Name two methods for balancing a chemical equation.

Description : (a) Why is it necessary to balance a chemical equation? (b)Name two methods for balancing a chemical equation.

Last Answer : a) Because a correct chemical equation must be in accordance with the law of conservation of mass according to which the total mass of the reactants must be equal to the total mass of the product. b) Hit and trial method, Oxidation number method.

What is a balanced chemical equation.

Description : What is a balanced chemical equation.

Last Answer : Ans. A chemical equation which has an equal number of atoms of each element in the reactants and the products is called balanced chemical equation.

What is a chemical equation? What are its essential features?

Description : What is a chemical equation? What are its essential features?

Last Answer : Ans. the qualitative and quantitative representation of a chemical reaction in short form in terms of symbols and formulae is called chemical equation. For example, on heating calcium carbonate, it gives Caco3 →Ca0 ... .e., the number of atoms of each element on both sides of arrow should be equal.

What information do you get from the following chemical equation: Zn(s) + 2HCl (dil) → ZnCl2 (aq) + H2(g)

Description : What information do you get from the following chemical equation: Zn(s) + 2HCl (dil) → ZnCl2 (aq) + H2(g)

Last Answer : This gives zinc chloride and hydrogen. The word equation is: Zinc + Hydrochloric acid → Zinc chloride + Hydrogen Formulae for the products are ZnCl2 and H2

Differentiate between: (a) Reactants and products (b) A balanced and an unbalanced chemical equation

Description : Differentiate between: (a) Reactants and products (b) A balanced and an unbalanced chemical equation

Last Answer : (a) Reactants and products Reactants 1. The substances that react with one another are called reactants. 2. Reactants are written on the left hand side of equation. Products 1. The new substances formed are ... are not equal to the number of elements on product side. 2. Ex- H2 + Cl2 → 2HCl

What are the ways by which a chemical equation can be made more informative ?

Description : What are the ways by which a chemical equation can be made more informative ?

Last Answer : 1. The physical state of the reactants and products can be indicated by putting (s) for solid, (l) for liquid, (g) for gas and (aq) for aqueous state. 2. Evolution or ... before their formulae. 5. By the sign → or  information about irreversible and reversible reactions can be obtained.

What are the limitations of a chemical equation ?

Description : What are the limitations of a chemical equation ? 

Last Answer : 1. It does not inform about the physical states of the reactants and the product i.e. whether they are solids, liquids and gases. 2. It does not inform about the concentration of reactants and ... It does not inform about the nature of the reaction i.e. whether it is reversible or irreversible.

Why it is necessary to balance a chemical equation ?

Description : Why it is necessary to balance a chemical equation ?

Last Answer : A chemical equation needs to be balanced so as to make the number of the atoms of the reactants equal to the number of the atoms of the products.

What is a chemical equation ?

Description : What is a chemical equation ?

Last Answer : Chemical Equation— A chemical equation is the symbolic representation of a chemical reaction using the symbols and the formulae of the substances involved in the reaction.

Chemical equation is balanced according to the law of [AMU 1984] (A) Multiple proportion (B) Reciprocal proportion (C) Conservation of mass (D) Definite proportions

Description : Chemical equation is balanced according to the law of [AMU 1984] (A) Multiple proportion (B) Reciprocal proportion (C) Conservation of mass (D) Definite proportions

Last Answer : (C) Conservation of mass

What is meant by coupled differential equation? A. The differential equation in which only rectilinear motions exit B. The differential equation in which only angular motions exit C. The differential equation in which both rectilinear and angular motions exit D. None of the above

Description : What is meant by coupled differential equation? A. The differential equation in which only rectilinear motions exit B. The differential equation in which only angular motions exit C. The differential equation in which both rectilinear and angular motions exit D. None of the above

Last Answer : C. The differential equation in which both rectilinear and angular motions exit

What is meant by coupled differential equation? A) The differential equation in which only rectilinear motions exit B) The differential equation in which only angular motions exit C) The differential equation in which both rectilinear and angular motions exit D) None of the above

Description : What is meant by coupled differential equation? A) The differential equation in which only rectilinear motions exit B) The differential equation in which only angular motions exit C) The differential equation in which both rectilinear and angular motions exit D) None of the above

Last Answer : C) The differential equation in which both rectilinear and angular motions exit

What is meant by coupled differential equation? a. The differential equation in which only rectilinear motions exit b. The differential equation in which only angular motions exit c. The differential equation in which both rectilinear and angular motions exit d. None of the above

Description : What is meant by coupled differential equation? a. The differential equation in which only rectilinear motions exit b. The differential equation in which only angular motions exit c. The differential equation in which both rectilinear and angular motions exit d. None of the above

Last Answer : c. The differential equation in which both rectilinear and angular motions exit