मराठी

What is wrong with the following chemical equation? Mg + O -> MgO Correct and balance it.

Advertisements
Advertisements

प्रश्न

What is wrong with the following chemical equation?

\[\ce{Mg + O -> MgO}\]

Correct and balance it.

रासायनिक समीकरणे/रचना
लघु उत्तर
Advertisements

उत्तर

In this reaction, oxygen is written as O, but it is a diatomic molecule, and it is stable; its formula is O2.

The correct balanced chemical equation is:

\[\ce{2MgO -> 2Mg + O2}\]

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Chemical Reactions and Equations - Very Short Answer Type Questions [पृष्ठ २८]

APPEARS IN

लखमीर सिंह Chemistry [English] Class 10
पाठ 1 Chemical Reactions and Equations
Very Short Answer Type Questions | Q 6. | पृष्ठ २८

व्हिडिओ ट्यूटोरियलVIEW ALL [4]

संबंधित प्रश्‍न

Complete and balance the following equation:

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


When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are products.


What is meant by chemical reaction? Explain with the help of an example.


State one characteristic of the chemical reaction which takes place when dilute sulphuric acid is added to barium chloride solution.


When a mixture of gases X and Y is compressed to 300 atm pressure and then passed over a catalyst consisting of a mixture of zinc oxide and chromium oxide (heated to a temperature of 300°C), then an organic compounds Z having the molecular formula CH4O is formed. X is a highly poisonous gas which is formed in appreciable amounts when a fuel burns in a limited supply of air; Y is a gas which can be made by the action of a dilute acid on an active metal; and Z is a liquid organic compound which can react with sodium metal to produce hydrogen gas.
(a) What are X, Y and Z?
(b) Write a balanced chemical equation of the reaction which takes place when X and Y combine to form Z. Indicate the conditions under which the reaction occurs.


Write word equation for the following skeletal equation:

\[\ce{Zn + HCl -> ZnCl2 + H2}\]


Balance the following equation .

N2 + O2 → NO


Balance the following equation:

PbO + NH3 → Pb + H2O + N2

 


Write the balanced chemical equation of the following reaction.

aluminium sulphate + sodium hydroxide → sodium sulphate + sodium meta aluminate + water.


Name the substance that is getting oxidised in the thermit process.


When a potassium iodide solution is added to a solution of lead (II) nitrate in a test tube, a precipitate is formed.

What is the colour of this precipitate? Name the compound precipitated.


Give a balanced equation for addition of iron to copper [II] sulphate solution. State the change in colour seen.


\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]

State what is a ‘balanced equation’.


Write a balanced equation for the following word equation:

Aluminium + Oxygen → Aluminium oxide 


Fill in the blank with the correct word from the options given below:

A chemical equation is a shorthand form for a _______ change.


Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.

NaOH + CO2 → Na2CO3 + H2O


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.

What is called thermolysis reactions?


Which among the following is(are) double displacement reaction(s)?

  1. `"Pb" + "CuCl"_2 -> "PbCl"_2 + "Cu"`
  2. `"Na"_2"SO"_4 + "BaCl"_2 -> "BaSO"_4 + 2"NaCl"`
  3. `"C" + "O"_2 -> "CO"_2`
  4. `"CH"_4 + 2"O"_2 -> "CO"_2 + 2"H"_2"O"`

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×