Hot tub owners can control disease-causing bacteria and algae by adding solid sodium hypochlorite pellets. NaCIO, to the water. This results in the formation of HCIO) as represented by the equilibrium H_0, HCIO, = 100g/ Undissociated HCIO effectively kills bacteria and algae. A pH of 7.40 is considered ideal for a hot tub. 1. Ideally, the water in a hot tub has a hydronium ion concentration of A. 4.0 x 10 mol/L and is basic mol/L and is basic B. 2.5 x 10 C. 4.0 x 10 D. 2.5 x 10 mol/L and is acidic mol/L and is acidic