Problem: Potassium hydroxide and phosphoric acid react to form potassium phosphate and water according to the equation.3KOH(aq) + H3PO4(aq) → K3PO4(aq) + 3H2O(l)Determine the starting mass of each reactant if 58.5 g of K 3PO4 is produced and 86.8 g of H3PO4 remains unreacted.(A) What is the starting mass of KOH? (g)(B) What is the starting mass of H 3PO4? (g)

FREE Expert Solution

We´re asked to determine the starting mass of KOH and H3PO4 based on the produced mass of K3PO4 and an unreacted amount of H3PO4.

 

The problem can be solved in 4 steps:

Step 1: Calculate the Molar Mass (MM) of KOH, H3PO4, and K3PO4.

Step 2: Calculate the moles of K3PO4, since we know the produced mass.

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Problem Details

Potassium hydroxide and phosphoric acid react to form potassium phosphate and water according to the equation.

3KOH(aq) + H3PO4(aq) → K3PO4(aq) + 3H2O(l)

Determine the starting mass of each reactant if 58.5 g of K 3PO4 is produced and 86.8 g of H3PO4 remains unreacted.

(A) What is the starting mass of KOH? (g)

(B) What is the starting mass of H 3PO4? (g)


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