JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Self Evaluation Test - The s-Block Elements

  • question_answer
    Acidified solution of sodium thiosulphate is unstable because in thiosulphate

    A) the sulphur atoms are at unstable oxidation  state of \[+2\]

    B) the two sulphur atoms are at different oxidation states of \[+6\] and \[-2\]

    C) the \[S-S\] bond are unstable bonds.    

    D) sulphur is in zero oxidation state.

    Correct Answer: B

    Solution :

    [b]  \[\underset{\left( Disproportionation \right)}{\mathop{N{{a}_{2}}{{S}_{2}}{{O}_{3}}}}\,+2HCl\xrightarrow{{}}\] \[2NaCl+S{{O}_{2}}+S+{{H}_{2}}O\]


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