aanjalimagarne
aanjalimagarne aanjalimagarne
  • 15-03-2022
  • Chemistry
contestada

When 15 gram Calcium oxide is treated with 2ogram nitric acid then limiting reactant find. What mass of calcium nitrate is formed?​

Respuesta :

classicdavidson19880
classicdavidson19880 classicdavidson19880
  • 15-03-2022

Explanation:

Without even doing any calculations I would say that the 20 g HNO3 is limiting

But let us check if my opinion is correct

Balanced equation:

CaO(s) + 2HNO3 (aq) → Ca(NO3)2 (aq) + H2O(l)

1 mol CaO reacts with 2 mol HNO3

Molar mass CaO = 56 g/mol

Mol CaO in 615 g = 615 g / 56 g/mol = 10.98 mol

This will react with 10.98 * 2 = 21.96 mol HNO3

Molar mass HNO3 = 63 g/mol

Mol HNO3 in 20 g = 20 g / 63 g/mol = 0.317 mol

Clearly - my original idea correct - HNO3 is limiting .

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