A 1 liter solution contains 0.302 M hypochlorous acid and 0.227 M sodium hypochlorite.Addition of 0.113 moles of hydrobromic acid will:(Assume that the volume does not change upon the addition of hydrobromic acid.)(Select all that apply.)Not change the pHRaise the pH slightlyExceed the buffer capacityRaise the pH by several unitsLower the pH by several unitsLower the pH slightly

A mixture of hypochlorous acid, HClO (weak acid), and sodium hypochlorite, NaClO (salt with strong base) forms an acidic buffer solution. The pH of the buffer solution changes slightly after the addition of a small amount of a strong acid or strong base. ------------------------------------We have, Molarity of weak acid HClO = 0.302 M = 0.302 mol/L Molarity of salt NaClO = 0.227 M = 0.227 mol/L Volume of solution = V = 1.0 L ---------Formula: - Therefore, Moles of HClO ------------------------------------According to the Henderson-Hasslebalch equation, the pH of the acidic buffer solution is given by ------------------------------------Moles of hydrobromic acid, HBr added = 0.113 mol Hydrobromic acid, HBr is a strong acid and it dissociates completely in aqueous solution as ..............(A) When moles of Hydrobromic acid, HBr added to the acidic buffer HClO/NaClO, the H+ ion of HBr reacts with NaClO forming HClO as ..............(B) Therefore, due to the addition of HBr to the buffer, moles of HClO increase and moles of NaClO decrease. According to reaction stoichiometry (B), HBr and NaClO react in 1:1 ratio. i.e. 0.113 mol HBr reacts with 0.113 mol NaClO forming 0.113 mol HClO. Thus, Moles of HClO formed = 0.113 mol Moles of NaClO reacted = 0.113 mol Therefore, Moles of HClO present in buffeer = 0.302 mol + 0.113 mol = 0.415 mol Moles of NaClO present in buffeer = 0.227 mol - 0.113 mol = 0.114 mol ------------------------------------According to the Henderson-Hasslebalch equation, the pH of the acidic buffer solution after addition of HBr is (assuming volume does not change after the addition of 0.113 mol HBr) ------------------------------------Change in pH of buffer solution is given by .Thus, after the addition of HBr, there will be a small decrease in the pH of the buffer solution. ------------------------------------Lower the pH slightly ********************************