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vazorg [7]
3 years ago
11

Write an equation for the reaction of phosphoric acid (H3PO4) and calcium hydroxide. What is the coefficient of calcium hydroxid

e in this equation?
Chemistry
1 answer:
Ainat [17]3 years ago
7 0

Answer:

The answer to your question is " 3 "

Explanation:

Equation = ?

Phosphoric acid = H₃PO₄

Calcium hydroxide = Ca(OH)₂

This is an acid base reaction because there is an exchange of hydrogens.

Reaction

                   H₃PO₄   +   Ca(OH)₂   ⇒   Ca₃(PO₄)₂  +   H₂O

Balance

                             Reactants      Elements      Products

                                  1                       P                    2

                                  1                      Ca                   3

                                  5                     H                     2

                                  6                     O                    9

The reaction is unbalanced

               <u>    2H₃PO₄   +   </u><u>3</u><u>Ca(OH)₂   ⇒   Ca₃(PO₄)₂  +   6H₂O</u>

Balance

                             Reactants      Elements      Products

                                  2                      P                    2

                                  3                      Ca                  3

                                 12                     H                    6

                                 14                     O                    14

Now, the reaction is balanced, the coefficient of Calcium hydroxide is 3

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Calculate the mass of xenon difluoride gas with a volume of 0.223 L, pressure of 0.799 atm and temperature of 47.0 oC.
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