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Determine the pH for solutions with the $\mathrm{H}^{+}$ concentrations given here.$$\begin{array}{ll}{\text { a. }\left[\mathrm{H}^{+}\right]=0.0014} & {\text { b. }\left[\mathrm{H}^{+}\right]=6.0 \times 10^{-8} \mathrm{M}} \\ {\text { c. }\left[\mathrm{H}^{+}\right]=4.2 \times 10^{-11} \mathrm{M}} & {\text { d. }\left[\mathrm{H}^{+}\right]=1.5 \times 10^{-1} \mathrm{M}}\end{array}$$

Chemistry 101

Chapter 16

Acidic Toxins

Section 3

[H+] and pH

Intro to Chemistry

Atoms, Molecules and Ions

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University of Central Florida

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in problem for finally value off pH for solutions having h plus iron concentration given, that is 04 party 0.14 So this question is taken from the topic pH. And by using this formula pH physical toe negative logarithm off hydrogen iron. We can easily find out the value off pH off these hydrogen in concentrations. So ph physical toe minus love off 0.14 So from log table from law tables so we get this value is log off 0.14 which is equal to minus off minus 2.85 which on adding we get 2.85 So that means this solution is acidic because ph is less than seven now in the part second part B, that is again, as plus iron concentration is given, which is six into 10 days to our minus eight Mueller. So again we can use this formula. P H is equal to minus logo hydrogen ion concentration, which is equal to minus logo 6.0 in tow, 10 days to power minus eight. So a place of mathematic in this case. So so this is basically we can write it as eat minus log off. Six. So that means eight minus log. Six. So the value off lock 60.77 So that means this is this Will you come out of it? Eight minus 0.77 So which is 7.23 So P H is equal to 7.23 And this is basically basic solution, because a speech is a speech. Value is more than seven. So it is busy. Okay. Coming toe the sea. So H plus iron concentration and see that is 4.2 in tow. Tenders to power minus 11. So again, ph physical toe minus logo H plus I in concentration. So we get minus logo 4.2 into 10 days to power minus 11 which is equal to 11. Minus logo. 4.2. So on solving logo 4.2 value. So we get This is, uh, 0.6232 So on solving 11 minus 110.6 to 3 to which is in the early 10.37 six it So this is the pH. So this is again a basic because ph value is more than seven. And in the last part, that is party H plus iron concentration is equal to 1.5 window tenders minus one. Mueller. Okay, so P H is equal to minus logo. Fetch plus iron concentration, which is equal to minus. Log off. 1.5 inter tenders. Power minus one, Which come out be one minus one minus. Log off 1.5. So basically logo for 1.5 value we get from table log table, which is 0.1760 So on solving we get one minus 0.1617 60 So on solving we get 0.8240 point 8 to 4. So this is the pH. So this is again. It is very acidic because ph is less than very less than seven. So it is a city. Okay, so on the basis off the formula pH physical toe negative localism off hydrogen ion concentration. We can find out. We find out the various, uh, hydrogen way, find out the Ph four solution with H plus concentration. That is, give

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