English

Balance the Following Equation: Na + O2 Na2o

Advertisements
Advertisements

Question

Balance the following equation:

Na + O2  Na2O

Advertisements

Solution

 4Na + O2 → 2Na2O

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Chemical Reactions and Equations - Exercise 1 [Page 19]

APPEARS IN

Lakhmir Singh Chemistry (Science) [English] Class 10
Chapter 1 Chemical Reactions and Equations
Exercise 1 | Q 15.01 | Page 19

RELATED QUESTIONS

What is a balanced chemical equation? Why should a chemical equation be balanced?


Translate the following statement into chemical equation and then balance it.

Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.


Write the balanced chemical equation for the following reaction.

\[\ce{Aluminium + Copper chloride -> Aluminium chloride + Copper}\]


Balance the given equation:

AI(OH)3   AI2O3 +H2O


Fill in the following blank with suitable word:

A solution made in water is known as an ........... solution and indicated by the symbol ...........

 


Write the balanced equations for the following reaction, and add the state symbols:
Magnesium carbonate reacts with hydrochloric acid to produce magnesium chloride, carbon dioxide and water.


With the help of an appropriate example, justify that some of the chemical reactions are determined by Change in colour 

Give chemical equation for the reaction involved in the above case. 


What do you understand by exothermic reactions?


Which of the following does not involve a chemical reaction?


Balance the following equation. Also name the product formed. 

CO2 + C →  CO


A student weighed some raisins and recorded the weight as ‘x’. She then soaked the raisins in distilled water. After about 2 hours she removed the raisins, wiped them dry and weighed them again, and recorded that as ‘y’. The percentage of water absorbed by raisins may be determined using the relationship.


What is a chemical equation? Why it is necessary to balance it?


Balance the following equation:

Fe2O3 + CO → Fe + CO2


Balance the following equation:

NO2 +H2O → HNO2 + HNO3


Write the balanced chemical equation of the following reaction.

iron pyrites(FeS2) + oxygen → ferric oxide + sulphur dioxide


Balance the following simple equation:

H2  +   O2  →   H2O


Balance the following simple equation:

CaO  +  HCl  →  CaCl2  +  H2


Balance the given chemical reaction as per the instructions below.

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]

Balance the equation with proper coefficient and rewrite the equation.


Write the skeleton equation for the following word equation and then balance them.

  1. Carbon + Oxygen → Carbon dioxide.
  2. Phosphorus + Chlorine → Phosphorus pentachloride.
  3. Sulphur + Oxygen → Sulphur dioxide.
  4. Magnesium + hydrogen → Magnesium + Hydrogen chloride chloride.

Which of the following is the correct observation of the reaction shown in the above set up?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×