Which of the compounds will leave a metal residue when heated?

Chemistry WAEC 2001

Which of the compounds will leave a metal residue when heated?

  • Cu(NO 3 )2
  • AgNO3 checkmark
  • K2CO3
  • CaCO3

The correct answer is: B

Explanation

AgNO3 is also known as lunar caustic because it: Creates a burning sensation and Leaves a black stain similar to the moon. Silver nitrate (AgNO3) will leave a metal residue when heated strongly.

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