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stira [4]
2 years ago
14

Given: 12 - x = 20 - 5x To Prove: x = 2

Chemistry
1 answer:
Rina8888 [55]2 years ago
4 0

Answer:

12 - x = 20 - 5x

Add 5x on both sides,

12 - x + 5x = 20 - 5x

12 + 4x = 20

Subtract 12 on both sides,

12 - 12 + 4x = 20 - 12

4x = 8

Divide 4 on both sides,

4x / 4 = 8 / 4

x = 2

Hence proved.

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The equilibrium chemical reaction is:

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Initial conc.       0.450                   0               0

At eqm.           (0.450-x)                 x               x

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pH=-\log (0.00212)

pH=2.67

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