Question

Explain the differences in each of the measured variables (n, V, P, T) that you would expect if the concentration of HCl(aq) had been standardized incorrectly (i.e. the concentration is 3.1 M instead of 3 M in the case of Mg)

Answer 1

Incorrect standardization of HCl(aq) to 3.1 M instead of 3 M would lead to an overestimation of the moles of reactants and products in a titration involving Mg, affecting the molarity of resultant solutions while temperature and pressure would likely remain unchanged.

Step-by-step explanation:

The question asks about the impact of an incorrect standardization of hydrochloric acid (HCl) solution on various variables (n, V, P, T) related to a titration experiment involving magnesium (Mg). If the concentration of the HCl solution was 3.1 M instead of the expected 3 M, the number of moles (n) of HCl reacting would be greater than calculated, leading to a potential overestimation of the moles of Mg present in the sample. This overestimation would directly affect the molarity (concentration) of any resultant solutions. Since titrations at the college level are usually carried out at constant temperature (T) and pressure (P), these conditions are unlikely to change due to incorrect standardization of HCl. However, the volume (V) of HCl needed to reach the end point would be less than expected because the solution is more concentrated than assumed.