Phosphorus with a mass of 55.8 g entered into a reaction with berthollet’s salt. It is necessary to calculate

| May 13, 2021 | education

Phosphorus with a mass of 55.8 g entered into a reaction with berthollet’s salt. It is necessary to calculate the masses of the products of this reaction.

First, you need to write down the reaction equations.

5KClO3 + 6P = 3P2O5 + 5KCl.

Therefore, it is necessary to calculate the mass of phosphorus oxide and potassium chloride.

First, let’s calculate the molar mass of phosphorus.

M (P) = 31 g / mol.

Let’s calculate the molar mass of phosphorus oxide.

M (P2O5) = 31 * 2 + 5 * 16 = 142 g / mol.

Let’s calculate the molar mass of potassium chloride.

M (KCl) = 75 g / mol.

Let’s calculate the mass of phosphorus oxide and potassium chloride according to the reaction equation.

55.8 g P – x g P2O5.

6 * 31 g / mol – 3 * 142 g / mol.

X = 127.8 g P2O5.

55.8 g P – y g KCl.

6 * 31 g / mol – 5 * 75 g / mol.

Y = 112.5 g.

Answer: 127.8 g P2O5; 112.5 g KCl.



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