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If you have a 1.12 M solution of NaOH, what is the pH of the solution? Assume the solution is at 25 C. Provide your response to one digit after the decimal:...

Question

If you have a 1.12 M solution of NaOH, what is the pH of the solution? Assume the solution is at 25 C. Provide your response to one digit after the decimal:

If you have a 1.12 M solution of NaOH, what is the pH of the solution? Assume the solution is at 25 C. Provide your response to one digit after the decimal:



Answers

A solution of lye (sodium hydroxide, $\mathrm{NaOH}$ ) has a hydroxide-ion concentration of $0.050 M$. What is the pH at $25^{\circ} \mathrm{C} ?$

We want to know the pH that comes from mixing 0.5 Moeller solution of acetic acid with a 0.25 more solution of sodium hydroxide. Volumes are equal and so we can use the Henderson hassle batch. Ah, equation. R P k A. For acetic acid is equal to 4.75 And because the log of our base over our acid is the log of one, which gives us the value of zero R p K. A. Is equal to R P. Eight. So our pH equals 4.75 at the midpoint of a tie tray shin of a weak acid with a strong base that's defined at the point when a tie tray shin has equal concentrations of the weak acid and the cons conjugated base. And so, according to our Henderson Hassle batch, um, the pH will equal the PK of that weak acid

The question is calculated ph and P. O. S of the solution containing 0.05 moller any which Okay so we know that concentration of poets minus Is equal to 0.05 mother. Because any which brakes as any plus and minus. So concentration of co 2- will be equal to concentration of any words. Okay now with the help of hydroxide iron concentration we can calculate P. Watch, How can we calculate? Because P. O. S. Is equal to minus log concentration of minus. Okay, so P. O. H will be equal to minus law 0.025 and P O H will comes out 1.6 For calculating value of Ph We know that Ph Plasma P watch it well to 14. Okay. This formula will be used. So P H will be required to 14 minus P O H 14 -1.6. That will come out 12.39. Well

The pH off a quick solution is 11.50 So we subsidy with this value in tow it to determine the Buick Soapy Ohh will be equal to 14. Let me raise it. So be it will be 14 minus the value off given ph substituting the value off 11.50 which gives me 14 minus 11 point 50 the b which turned out to be to a point five. We calculate the concentration off any which from this we know the formula for P. O. H is negative. Log off which negative ion concentration. So the concentration off which negative I kn will be equal to the anti log off 2.5, which will be equal to three point 16 Multiply 10 days to power negative three.

Chapter 16 problem 106 from chemistry. The central signs the questions asking What is the ph of a solution that is 2.5 times 10 to the negative. Nine more clarity in an average. Just your answer. Make sense was assumption. Do we normally make that is not involved with this case? So whenever we are trying to find a p Asian were given a polarity of Indio and, um, Alaric de Oven Ohh consultations. The first thing that we're always going to do is just to find her p o h from back. So you do you do Our P. O. H. Is equal to the negative law over O H concentration. And whenever we do that, it's the negative log. Other 2.5 times 10 to the negative, not it. And when we put that entire calculator, we get 8.6. So then, to find her p age, we have two. D'oh 14 is equal to P h plus P o. H. And so therefore it just ends up being 14 minus 8.6 and we get by court for But this answer is various is in the acidic area of our ph scale because there is acidic, seven is neutral and 14 is basic. So advising this in the area and we know that any wages, a very strong base, does anything it should be in closer to the basic area. So what we're sitting here is that which is not valid is that the concentration of the hydroxide ion is equal to the concentration of the Syrian hydroxide. And so the first thing that we should automatically and notices that our concentration is very definitely we have to 0.5 times 10 to the negative night rulers of any reach. And so therefore, we are in a bunch of water. And so we need to be able to find our concentration of our heart dockside solution by adding the concentration of hydroxide solution of water with the hydroxide solution of many in which and that's because it is very tightly so. To do this to find our Pio each, we have to do our own beach concentration. R o H concentration is going to be your own h from your water in a dealer solution, plus your beach from your base. I want to Adam up together, you'll get a little bit stronger of a concentration. So R o H minus from the water is just going to be 10 times. It's gonna be one times 10 to the Knick of seven. And then our rich concentration is what we're given. So when we add those two up, we get gunpoint 025 times 10 tonight of seven. And then when we played that into our negative log equation to find their p Ohh we get 1.25 times tin today. Seven, we will get seven, you know? Sorry. 6.99 And so when we do, our pH plus P. O. H. Is equal to 14. 14 minus P o. H will give us 7.1 in. This is pretty neutral, but it's still more closer to the basics. I'd been 5.4


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