Answer:
The balanced chemical equation is given as:

Explanation:
When potassium hydroxide reacts with phosphoric acid it gives potassium phosphate and water as a products.
The balanced chemical equation is given as:

According to reaction, 3 moles of potassium hydroxide recats with 1 mole of phosphoric acid to give 1 mole of potassium phosphate and 3 moles of water.
Answer:
In the case of an exothermic reaction, the reactants are at a higher energy level as compared to the products, as shown below in the energy diagram. In other words, the products are more stable than the reactants. Overall Δ H ΔH ΔH for the reaction is negative, i.e., energy is released in the form of heat.
Explanation: