Amolar solution is a solution that contains one mole of solute in

1 liter of the solution

Explanation:

Molarity or concentration of a solution refers to the number of moles of solute contained in a volume of 1 liter or 1 dm³ solution.Therefore, the concentration of a solution is calculated by dividing the number of moles of a solute by the volume of the solution.Concentration is given in mol/L or mol/dm³.Hence, a molar solution is a solution that contains 1 mole of a solute in 1 liter of the solution. This is equivalent to 1M or 1 mol/L.

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na