Question

1. Enter the balanced equation for the decomposition of water in to its elements 2. Automobile airbags inflate with the formation of nitrogen gas from the following chemical reaction Identify the number of each atom in the reactants and products for this balanced reaction 2NaN3 (5) ► 3 N2 (g) 2 Na(s) Reactant atoms Product atoms: a Na b N a Na b. N What law is shown here? 3. Balance this equation: C12H2011 + 02 → CO2 + H2O 4. Predict products, balance the equation, and write complete & net ionic equations a) BaCl2 + K2SO4 b) Fea(SO4)3 + LIQH

Answer 1

Ans)

1-Decomposition of water balanced chemical equation:   2H2O(l)  $\rightarrow$ H2(g) + O2(g)

2-2NaN3(s) $\rightarrow$ 3N2(g) +    2Na(s)

Reactant atoms : Na - 2

N - 6

Product atoms : Na - 2

N - 6

It shows law of conservation of mass which states that  the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.

3-A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side.

balanced chemical equation for above equation will be:

C12H22O11 + 12O2 = 12CO2 + 11H2O

4- Complete equations are as follows:

(a) BaCl2 + K2SO4 = BaSO4 + 2KCl

(b) Fe2(SO4)3 + 6LiOH = 2Fe(OH)3 + 3Li2SO4