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Question 2 0f JoThe concentration Of the hydronium ion in an aqueous solution at 25 ?C is 0.0055 M. What is the concentration of the hydroxide ion?...

Question

Question 2 0f JoThe concentration Of the hydronium ion in an aqueous solution at 25 ?C is 0.0055 M. What is the concentration of the hydroxide ion?

Question 2 0f Jo The concentration Of the hydronium ion in an aqueous solution at 25 ?C is 0.0055 M. What is the concentration of the hydroxide ion?



Answers

What is the concentration of hydroxide ion in a $0.060 M$ aqueous solution of methylamine, $\mathrm{CH}_{3} \mathrm{NH}_{2} ?$ What is the pH?

Here, 0.50 Mueller. A sale solution. Given we have to calculate the concentration of high Dona Mayan and concentration of which miners on at 25 degrees etiquette. Yeah, concentration of A. C. L. Is 0.50 mola. Now A C. L. Is a strong monochromatic acids. So concentration of hydrogen helium ion is equal to concentration of A. C. L. That is concentration of H 30. Plus is equal to 0.50 Moeller. Now concentration of haida near my own times, concentration of which minus ion is kw kw is and put a constant for water. Therefore concentration of which minus ion is KW divided by concentration of is three A Plus. Now the value for K. W. At 25 degrees in ticket is 1.0 times 10 to the power negative party divided by the concentration of high Donia mayan, which is 0.50. Therefore concentration of which man asean is 2.0 times 10 to the power negative 13 Mueller. So this is the concentration of which my nasa and this is the concentration of hi lumia ion

In this question a solution of hydrochloric acid is given and it's 20 01059 More bar America. And we have to find out the concentration of high dona mayan at 25 degrees. And ticket also we have to find out the concentration of hydroxide down at 25 degree. Sending it now. Since a cell is a strong mono protic acid. So the hide Tony um iron concentration Is equal to the concentration of the strong as it is here. So it will be 0.059 more park later now Kw is equal to the product of concentration of titanium ion and O. H minus iron. Now Kiddo Blue is iron mm product constant for water which is one times 10 to the power negative 14. So KW divided by concentration of hydro Nehemiah will give the concentration of O. H minus iron. There are four Concentration of 08- is equal. Troop 1.0 times 10 to the Power -14, divided by 0.059. So it will be 1.69 tons 10 to the power negative 13. So it is 1.7 times 10 to the power negative 13. So the high Dona mind concentration is dear oh born 059 And this is also a more parameter and concentration of who. It's my nasa, 1.7 times 10 to the power negative 30 and

So we want to know the hydro Nia my on concentration in a solution where it's concentration is twice as great as the, uh, concentration of the hydroxide ion concentration. So let's let the hydroxide be X and the hydro Nia, my on will be to x and then, um, the to the H three of the hydro knee. Um, and the hydroxide are always related by the K W. So we can always use that relationship in any way. Quickest solution. And so two x for the hydro knee, um, and X for the hydroxide two x squared. If we divide both sides by two, then we have five times 10 to the minus. 15 is X squared. And if we take the square root, then we get seven 0.7 times 10 to the minus eight for X. So two X is two times that. And so there is our hydro knee of ion concentration. Of course, the hydroxide will be happy that seven times 10 to the minus e

So we want to calculate the hydro knee of concentration in a solution where it's concentration is, uh, twice the concentration of the hydroxide. So if we let the hydroxide concentration be, uh, X, then the hydro name ion concentration will be two X and we can plug those into the kw because, uh, all acquis solutions Ah, obey T k w equilibrium or all A Queer solutions have the kw equilibrium. And so, just a matter of solving dividing both sides by two and then taking the square root That's 10 to the minus 15. I'm sorry. Ah, and then multiplying by two, that would be 14 0.14 times 10 to the minus eight Eyes two x And we won't express that as 1.4 times 10 to the minus seven. And that is the ah so two X is thehyperfix. Only a Mayan concentration and X is the hydroxide I concentration


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