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never [62]
3 years ago
5

Exactly 1 mole of alpo4 contains how many moles of al p and o

Chemistry
1 answer:
Gwar [14]3 years ago
7 0
<span>ALPO4 can be broken up into AL/P/O4. There is one AL mole, one P mole, and four O moles. Together, that is a total of six moles -- 1 + 1 + 4 = 6. You can find the moles for each section by breaking the atoms up by type. There are 4 O because the number 4 follows the O. There are none in front of AL or P, so they are singular.</span>
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C

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Ionically:

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An ICE TABLE IS USED TO FIND THE CONCENTRATION OF THE HYDROXONIUM ION(H3O+). ICE STANDS FOR INITIAL, CHANGE AND EQUILIBRIUM.

                 NH4+      H2O     ⇄  NH3        H3O+

I                0.242                           0             0

C                 -X                              +x              +X

E             0.242-X                          X              X

Since the question provides us with the base dissociation constant value K b, we can calculate the acid dissociation constant value Ka

To find this, we use the mathematical equation below

K a ⋅ K b    = K w

 

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10 ^-14  at room temperature

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K a = K w.K b   = 10 ^− 14 /1.8 * 10^-5 =  5.56 * 10^-10

Ka = [NH3][H3O+]/[NH4+]

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Since the value of Ka is small, we can say that 0.242-x ≈  0.242

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pH = -log[0.00001161895 ] = 4.94

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