1.63 M
The reaction between NH₃ and HCl is given by the equation;
NH₃(aq) + HCl(aq) → NH₄Cl(aq)
We want to calculate the concentration of ammonia solution.
Step 1: Calculate the number of moles of HCl used
To calculate the number of moles we multiply the molarity of HCl by the volume.
Moles = Molarity × Volume
= 0.40 M × 0.0326 L
= 0.01304 moles
Step 2: Determine the number of moles of NH₃
From the equation 1 mole of HCl reacts 1 mole of NH₃
Therefore, the mole ratio of HCl to NH₃ id 1 : 1
Hence, the number of moles of HCl are equal to the number of moles of NH₃
Number of moles of NH₃ = 0.01304 moles
Step 3: Calculate the concentration of NH₃
Molarity is the concentration of a solution in moles per liter
Molarity = Number of moles ÷ Volume
Number of moles = 0.01304 moles
Volume of NH₃ =8.00 mL or 0.008 L
Therefore;
Molarity = 0.01304 moles ÷ 0.008 L
= 1.63 M
Therefore, the concentration of NH₃ IS 1.63 M
