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BITSAT Chemistry p Block Elements (Group 13 & 14) 2023 BITSAT 2023 (Memory Based Paper 1)

BITSAT Chemistry Question (2023) — Solution

Question

What is x in the following reaction? Al ( s )+ NaOH ( aq )+ H _2 O ( l ) x+ H _2( ~g )

Options

  1. A. Na _2 [ Al ( OH )_4 ]^ -
  2. B. Na ^ + [ Al ( OH )_4 ]^ -
  3. C. Na _2 [ Al ( OH )_6 ]^ -
  4. D. Na ^ + [ Al ( OH )_6 ]^ -

Answer

B. Na ^ + [ Al ( OH )_4 ]^ -

Step-by-step solution

2 Al ( s )+2 NaOH ( aq )+6 H _2 O ( l ) 2 Na ^ + [ Al ( OH )_4 ]^ - ( aq )+3 H _2( ~g )

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