Question

What happens when:



a) An aqueous solution of lead nitrate reacts with potassium iodide.

i) Write its chemical equation.

ii) Name the type of this chemical reaction.

b) Write any two examples of decomposition reactions. please help me fast​

Answer 1

Explanation:

a)

When you add lead nitrate to potassium iodide, their particles combine and create two new compounds, a yellow solid called lead iodide and a white solid called potassium nitrate. Yellow clouds indicate that the chemical change has taken place.

b) decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.

Answer 2

Explanation:

a)lead nitrate when react with potassium iodide it gives lead iodide and potassium nitrate

eqn.

KI(aq)+Pb(NO3)2(aq)→PbI2(s)+2KNO3

(ii) it undergoes double displacement reaction

b) example of decomposition reaction

CO2------->C+O2

2HCl-------->H2+Cl2