हिंदी

Balance the Following Equations:

Advertisements
Advertisements

प्रश्न

Balance the following equation:

 Fe + H2O → Fe3O4 + H2

 

एक शब्द/वाक्यांश उत्तर
Advertisements

उत्तर

3Fe + 4H2O → Fe3O4 + 4H2

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: The Language of Chemistry - Exercise 1 (B) [पृष्ठ १५]

APPEARS IN

सेलिना Concise Chemistry [English] Class 9 ICSE
अध्याय 1 The Language of Chemistry
Exercise 1 (B) | Q 5.01 | पृष्ठ १५

संबंधित प्रश्न

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 compound 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.

  1. What are X, Y and Z?
  2. 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:

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


In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode?


State the information conveyed by the following equation:

Zn(s) + 2HCl(aq) → ZnCl2(aq)  + H2 ↑


Balance the following equation:

Zn + KOH → K2ZnO2 + H2


Balance the following equation:

P + HNO3 → NO2 + H2O + H3PO4


A student mixes sodium sulphate powder in barium chloride powder. What change would the student observe on mixing the two powders? Justify your answer and explain how he can obtain the desired change.


Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.

Heat energy


Give word equation for the following chemical reaction and give the names of the product formed.

NH3 + HCl→ NH4Cl


Which among the following statement(s) is(are) true? ‘Exposure of silver chloride to sunlight for a long duration turns grey due to

  1. The formation of silver by the decomposition of silver chloride.
  2. sublimation of silver chloride.
  3. decomposition of chlorine gas from silver chloride.
  4. oxidation of silver chloride.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×