Question

A 1.0 mole sample of HN03 is added to water. The final volume of the solution is 1.5 L in the final temperature of the solution is 25°C. what is the molar concentration of nitrate ion in the final solution?

Answer 1

To find the molar concentration of nitrate ion in the final solution, we need to first calculate the final concentration of HNO3 in the solution.

Given:
- Initial moles of HNO3 = 1.0 mol
- Final volume of solution = 1.5 L

Molar concentration (M) is calculated using the formula:
M = moles of solute / volume of solution in liters

Molar concentration of HNO3:
M = 1.0 mol / 1.5 L
M = 0.67 M

Since HNO3 completely dissociates in water to form nitrate ions (NO3-), the molar concentration of nitrate ion in the final solution is also 0.67 M.