The amount of i₃⁻(aq) in a solution can be determined by titration with a solution containing a known concentration of s₂o₂⁻³(aq) (thiosulfate ion). the determination is based on the net ionic equation 2s₂o₃²⁻(aq)+i₃⁻(aq)⟶s₄o₆²⁻(aq)+3i⁻( aq). given that it requires 38.1 ml of 0.440 m na₂s₂o₃(aq) to titrate a 25.0 ml sample of i₃⁻(aq), calculate the molarity of i₃⁻(aq) in the solution.

0.22 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

moles of

Thus moles of = 0.011

According to stoichiometry:  

2 moles of require 1 mole of

Thus 0.011 moles of require= moles of

Thus Molarity of

Therefore, the molarity of in the solution is 0.22 M

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.