Question

In: Chemistry

In the following reaction 108 grams of water were formed 3Cu(OH)2 + 2H3 PO4 -----> Cu3...

In the following reaction 108 grams of water were formed

3Cu(OH)2 + 2H3 PO4 -----> Cu3 (PO4)2 + 6H2O

A) Calculated how many grams of copper(II) hydroxide were reacted?

B) Calculated how many grams of phoosphoric acid H3PO4 were reacted?

C) Calculated how many grams of copper (II) phosphate were formed?

Solutions

Expert Solution

3Cu(OH)2 + 2H3 PO4 -----> Cu3 (PO4)2 + 6H2O

Three moles of Cu(OH)2 reacts with two moles of H3 PO4 to produce one mole of Cu3 (PO4)2 and moles of H2O

Amount of water produced: 108 g

Molecular weight of water: 18g/mol

Number of moles of water produced = 180g/ 18 gmol-1 = 6 moles

Since 6 moles are produces , so the stoichiomety of the reaction is as shown above.

A) Calculated how many grams of copper(II) hydroxide were reacted?

Molecular weight of Ca(OH)2: 74.093 g/mol

So three moles of Ca(OH)2 have reacted = 74.093 g/mol x 3 moles = 222.279 g

B) Calculated how many grams of phoosphoric acid H3PO4 were reacted?

Molecular weight of H3PO4: 97.994 g/mol

So two moles of H3PO4 have reacted = 97.994 g/mol x 2 moles = 195.998 g

C) Calculated how many grams of copper (II) phosphate were formed?

Molecular weight of Cu3(PO4)2: 380.58 g/mol

So one mole of Cu3(PO4)2 is produced =380.58 g/mol x 1 moles = 380.58 g


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