Give an example of a double displacement reaction other than the one given in Activity 1.10
Double Displacement Reaction example
A. Silver nitrate reaction sodium chloride
AgNO3(aq) + NaCl(aq) ——> AgCl(s) + NaNO3(aq)
Checmical reactions and equations solution
Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
Copper sulphate crystal is blue in colour. So it is also called “Blue Vitriol” (Hindi: नीला थोथा). It is used in refining industries and agriculture. When it is dissolved in water it forms blue solution.
Iron metal reacts with copper sulphate and displaces copper.
Write the balanced equation for the following chemical reactions.
Balance
A. Hydrogen + Chlorine ——> Hydrogen chloride
B. Barium chloride + Aluminium sulphate —–> Barium sulphate + Aluminium chloride
C. Sodium + water ——> Sodium hydroxide + Hydrogen
Why should a magnesium ribbon be cleaned before burning in air?
Magnesium is a reactive metal. It is a soft metal and available in a lab as a thin ribbon for