AP EAMCET201922 Apr 2019Morning ShiftChemistrys Block ElementsActual
A compound ( (M O ₂ ) ) of group I element ((M) ) hydrolysed to form (M⁺, OH ⁻, X ) and (Y ). When (X ) reacts with ( I ₂ ) in basic medium the products formed are ( I ⁻ ), water and (Y ). Then (X ) and (Y ) are respectively
Options
- A( H ₂ O ₂, O ₂ )
- B( H ₂ O ₂, O ₃ )
- C( H ₂, O ₂ )
- D( O ₂, H ₂ )
Correct answer
A. ( H ₂ O ₂, O ₂ )
Step-by-step solution
Given, A compound ( ( MO ₂ ) ) of group 1 element ((M) ) hydrolysed to give ( M ⁺, OH ⁻, X ) and (Y ) when ((X) ) reacts with ( I ₂ ) in basic medium, it gives ( I ⁻ ), water and ((Y) ). Thus, ((X) ) and ((Y) ) are ( H ₂ O ₂(X) ) and ( O ₂(Y) ) respectively. The reaction involved are as follows : ( aligned & 2 MO ₂+2 H ₂ O 2 M ⁺+2 OH ⁻+ H ₂ O ₂+ O ₂ & (X) & I ₂+ H ₂ O ₂+2 OH ⁻ 2 I ⁻+2 H ₂ O + O ₂ aligned ) Hence, option (a) is the correct answer.