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Inessa05 [86]
3 years ago
6

if theres no coefficient on a element symbol, is the power automatically 1 like it would be if there was no subscript?

Chemistry
1 answer:
Ivenika [448]3 years ago
5 0
Yup go this website for more information http://dwb.unl.edu/calculators/activities/BalEqn.html
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Answer:

pH = 5.47

Explanation:

The equilibrium that takes place is:

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Ka = \frac{[H+][IO-]}{[HIO]} = 2.3 * 10⁻¹¹

At equilibrium:

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<u>Replacing those values in the equation for Ka and solving for x:</u>

Ka=\frac{x^2}{0.5-x}=2.3*10^{-11} \\x^2=(2.3*10^{-11})(0.5-x)\\x^2=1.15*10^{-11}-2.3*10^{-11}x\\x^2+2.3*10^{-11}x-1.15*10^{-11}=0\\x=3.39*10^{-6}

Then [H⁺]=3.39 * 10⁻⁶, thus pH = 5.47

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