Q18 of 152 Page 19

Balance the following chemical equations:

(i) NH3 N2 + H2


(ii) C + C02 CO

(i) 2NH3 N2 + 3H2

2 moles of ammonia and 3 moles of hydrogen will balance the reaction.


(ii) C + C02 2C


Adding 2 moles of carbon will balance the reaction.



More from this chapter

All 152 →
18 What is a chemical equation? Explain with the help of an example. 18 Giving examples, state the difference between balanced and unbalanced chemical equations. 19 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:

(i) elements


(ii) compounds


(iii) reactants


(iv) products


(v) metals


(vi) non-metals

 20 What are the various ways in which a chemical equation can be made more informative? Give examples to illustrate your answer.