question_answer

2Sulphide ion in alkaline solution reacts with solid sulphur to form polysulphide ions having formula, \[S_{2}^{2-},\,\,S_{3}^{2-},\,\,S_{4}^{2-}\] etc. if \[{{K}_{1}}=12\] for \[S+{{S}^{2-}}\rightleftharpoons S_{2}^{2-}\] and \[{{K}_{2}}=132\] for \[2S+{{S}^{2-}}\rightleftharpoons S_{3}^{2-},\] calculate \[{{K}_{3}}\] for \[S+{{S}^{~}}_{2}^{2-}\rightleftharpoons S_{3}^{2-}\] Give your answer by dividing 5.5

Answer:

2.00