Question

Calculate the Normality of a HF solution that contains 10g in 3 dm^3.

Options:
A) 1 N
B) 3 N
C) 0.1 N

Answer 1

The normality of the HF solution that contains 10g in 3dm^3 is 0.5 N.

Step-by-step explanation:

The normality of a solution is the number of equivalents of solute per liter of solution. To calculate the normality of a HF solution, we need to determine the number of equivalents of HF in the solution. The molar mass of HF is 20 g/mol, so the number of moles of HF in 10 g is 10 g / 20 g/mol = 0.5 mol. Since HF is a monoprotic acid, it donates 1 equivalent of H+ per mole. Therefore, the normality of the HF solution is 0.5 N.