Which of the following samples will react fastest with dilute trioxonitrate (V) acid?

Chemistry JAMB 1990

Which of the following samples will react fastest with dilute trioxonitrate (V) acid?

  • 5 g of lumps of CacO3 at 25°C
  • 5 g of powered CacO3 at 25°
  • 5 g of lumps of CaCO3 at 50°C
  • 5 g of powered CaCO3 AT 50°C checkmark

The correct answer is: D

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