Answer:
3000mL
Explanation:
The following data were obtained from the question:
Volume of acid (Va) =..?
Molarity of acid (Ma) = 2.5M
Volume of base (Vb) = 1.5L
Molarity of base (Mb) = 5M
Next, we shall write the balanced equation for the reaction. This is given below:
HCl + NaOH —> NaCl + H2O
From the balanced equation above,
We obtained the following:
Mole ratio of the acid (nA) = 1
Mole ratio of base (nB) = 1
Next, we shall determine the volume of HCl needed for the reaction. This can be obtained as follow illustrated below:
MaVa / MbVb = nA/nB
2.5 x Va / 5 x 1.5 = 1
Cross multiply
2.5 x Va = 5 x 1.5
Divide both side by 2.5
Va = 5 x 1.5 / 2.5
Va = 3L
The volume of the acid required is 3L.
Finally, we shall convert the volume of the acid from litre (L) to millilitre (mL). This is illustrated below:
1L = 1000mL
Therefore, 3L = 3 x 1000 = 3000mL.
Therefore, the volume of the acid, HCl in mL needed fi4 the reaction is 3000mL
