Balanced Chemical Equation

Q.

How to balance chemical equation

C4H10+02==C02+H2O

Q.

Write the balanced chemical equations for the below reaction and identify the reaction in the case: Chlorine gas is passed in an aqueous Potassium Iodide solution to form Potassium Chloride solution and solid Iodine.

Q.

Balance this equation ( I )No2+H2O=HNo2+HNO3

Q.

Balance this equation ( I )H2O2+Mno2=H2O+O2

Q.

Balance this equation (I) Na2O+H2O=NaOH

Q.

A white salt on heating decomposes to give brown fumes and a residue is left behind.

1. Name the salt.
2. Write the equation for the decomposition reaction

Q. A balanced chemical equation obeys the law of conservation of mass.
State true or false.

1. True
2. False

Q. Write a balanced chemical equation with state symbols for the following reactions.
Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.

Q.

Balanced chemical equation of Ca+N2

Q. Write the balanced chemical equations for the following reaction:

Q.

A balanced equation has an equal number of___ of different ___in the reactants and products.

1. molecules, atoms

2. molecules, elements

3. atoms, elements

4. elements, molecules

Q.

For balancing chemical reactions, the number of the atoms on the reactant side should be equal to the number same atoms on the product side.

1. True

2. False

Q. Name the metals present in alloy.​
(a) Brass​ ​

Q.

Which is the symbol of mercury?

1. Cu

2. Hg

3. Au

4. Mg

Q.

Balancing the following chemical reactions by identifying the products.

Fe₃O₄ $+$+HCl $\to$→ FeCl₂$+$+ FeCl₃ $+$+_-------

Q.

Write a balanced chemical reaction where the substance changes color from black to white.

On the 8^th of November 2016, Prime Minister Narendra Modi announced the banning of all rupees 500 and rupees 1000 banknotes in circulation.

1. What was the decision termed in a single word?
2. How did it help in changing the color of money from black to white?

Q. Name the metals present in alloy.​
(d) Stainless steel​ ​

Q. Identify the values of x, y and z for the following reaction to be balanced.
${\text{xN}}_2+{\text{yH}}_2\to {\text{zNH}}_3$

1. x=1, y=1, z=1
2. x=2, y=3, z=2
3. x=1, y=3, z=2
4. x=1, y=2, z=3

Q. Match the following symbols:

1. liquid
2. aqueous
3. gas
4. solid

Q.

What is the second step to balance a chemical equation?

1. Pick an element that is not the same on both sides

2. Write the oxidation numbers of each type of atoms

3. Write the skeleton ionic equation

4. None of the choices

Q.

Sodium + Water -----------> Sodium hydroxide + Hydrogen

How to balance this equation?

Q. When potassium chlorate $\left(KCl{O}_3\right)$ is heated in the presence of manganese dioxide catalyst, it decomposes to form potassium chloride and oxygen gas. Represent this in the form of a balanced chemical equation.

Q. ${\text{C}}_5{\text{H}}_{11}{\text{NH}}_2+{\text{O}}_2\to {\text{CO}}_2+{\text{H}}_2\text{O}+{\text{NO}}_2$

The coefficient of ${\text{O}}_2$ after balancing the above equation is _____.

1. 37
2. 11
3. 35
4. 13

Q.

Why oxygen's symbol is red in colour ?

Q. Write the balanced equation of combustion of methane.

Q. Give a balanced chemical equation in which the product forms a dirty green precipitate

Q.

In the word equation, which of the following is/are not indicated?

1. Reactants in words

2. Formulae of reactants in chemical reactions and equation

3. Products in words

4. The physical state of chemicals

Q.

Write the balanced chemical equation for the process of photosynthesis.

Q. Explain in detail, the steps to balance an equation?

Q. Balance the following equations:

(a) CH₄ + O₂ → CO₂ + H₂O
(b) Na₂O + H₂O → NaOH
(c) Ca(OH)₂ + HCI → CaCI₂ + H₂O
(d) Na + H₂o → NaOH + H₂
(e) Na + CI₂ → NaCI