Question

A 25ml sample of an unknown hclo4 solution requires titration with 22.62ml of 0.200m naoh to reach the equivalence point. what is the concentration of the unknown hclo4 solution

Answer 1

The concentration of the unknown HCLO4 solution is calculated using titration data and stoichiometry principles. The result is determined to be 0.18096 M.

Step-by-step explanation:

To find the concentration of the unknown HCLO4 solution, we must use the concept of titration, where a reaction occurs between an acid and a base until neutralization at the equivalence point. Given the volume and molarity of the sodium hydroxide (NaOH) solution used for titration, we can calculate the moles of NaOH, which will be equal to the moles of HCLO4 due to the 1:1 stoichiometry of their reaction.

Here are the calculations:

1. Calculate the number of moles of NaOH used:
   # mol NaOH = Volume (L) × Molarity (M) = 0.02262 L × 0.200 M = 0.004524 mol NaOH
2. Since the stoichiometry of the reaction between HCLO4 and NaOH is 1:1, the moles of HCLO4 will be equal to the moles of NaOH:
3. Finally, to find the concentration of HCLO4, use the formula: Concentration (M) = Moles / Volume(L). For the HCLO4 solution, this is 0.004524 mol / 0.025 L = 0.18096 M.

Therefore, the concentration of the HCLO4 solution is 0.18096 M.

Answer 2

The concentration of HClO4 is calculated as follows

write the equation for the reaction

NaOH + NClO4 = Na ClO4 + H2O

find the moles of NaOh that is moles = molarity x volume /1000

= 22.62ml x 0.200 /1000 = 4.524 x10^-3 moles

by use of mole ratio between NaOh to HClO4 which is 1:1 the moles of HClO4 is= 4.524 x10 ^-3 moles

concentration = moles /volume x1000

= (4.524 x10^-3)/25 x1000 = 0.18 M