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What is the pH ofa 0.500 M NH3 solution that has Kb = [.8 x 10-5? The equation for the dissociation of NH3 is:NH3(ae) Hzo(): NHa+(a4) OH (ae)...

Question

What is the pH ofa 0.500 M NH3 solution that has Kb = [.8 x 10-5? The equation for the dissociation of NH3 is:NH3(ae) Hzo(): NHa+(a4) OH (ae)

What is the pH ofa 0.500 M NH3 solution that has Kb = [.8 x 10-5? The equation for the dissociation of NH3 is: NH3(ae) Hzo(): NHa+(a4) OH (ae)



Answers

Base Solutions
Determine the $\left[\mathrm{OH}^{-}\right], \mathrm{pH},$ and $\mathrm{pOH}$ of a 0.15 $\mathrm{M}$ ammonia solution.

This one's pretty straight forward. Using the Henderson Hassle Bolt equation, pH will be equal to K, which is the negative log of K a value you don't know the K a value for ammonium, but we do know that KB Value so K be divided into kw will give us a k a. You take the negative longer that we get our PK and then plus the log of the base concentration which was given to us over the acid concentration and would get 9.21 as our Ph.

We have a reaction off carbon monoxide with chlorine to form carbonite chloride. The reaction is depicted as shown so carbon monoxide plus chlorine gives me see who steal too. We have value off. KP is equal to 3.10 at 700 kelvin temperature. We have the equilibrium constant K P is equal to pressure off C O seal, too. Divided by pressure off, CEO multiplied would seal, too. That is equal to 3.10 So using this initial partial pressure, we prepare an I C E table represented as this. We substitute the values in equilibrium constant and solve the quadratic equation. Tau obtain a value off X. We're next. Is the pressure off carbon monoxide react to reach an equilibrium, So solving the quadratic equation and determine the value off X. Let a solvent ex turn out to be X equal zero point 645 divided by two or the value off X will be 0.566 divided by two, which equals the value of X equal 0.3 to 2, or the value off excess 0.238 Here the value. 0.32 is discarded as it will give a negative value off partial pressure of carbon monoxide. So, bitches, 215 minus X, where X is equal to 0.283 This will be the value off X that will be used in for dissolving the question. Now we have the partial pressure at equilibrium as calculated, shown off each and every respective guests the pressure that equilibrium will be the some off the some off each gases we can clean. The more fraction off COC l that is carbon include right at equilibrium, which is more faction is you could do pressure off a particular gas divided by the total pressure substituting in the values we have. More fraction is equal to 0.879

I got arrested during the oId concentration of I was the pink and the pillage of a 0.15 polarity of ammonia solution. So we know that if we have ammonia, which is any three on react, that with water, it reacts to produce any four plus and minus. So let's create ice people. So we have in a story as well. Uh, and each four plus and 20 we exclude water because it's a pure look. You said that in this a concentration of N h. Is there a 0.15? The products is there are change of reactive doesn't have an hour. Change in products is positive. So we have 0.15 minus x. Okay, so then r k v value is equal to the concentration of our products times the concentration or not, time invited by the Constitution of our reacted, which is equal to X squared. All right, our products a lot of our reacted 0.15 minus x, which is equal to our given Katie Valley, which is 1.76 10. So if K is quite small, they're K b values quite small. We can count Florida X and solve for X squared is equal to 1.76 times 10 to the negative five. I'm 0.15 and let's take the square root of both sides. And we get extra because the 1.6248 I'm tense and in the other three. Okay, so now that we have our X value, we can yet are always reminded concentration, correct Rome or acceptable. That's it. So this is you got to train it so called out our p o H. Is equal Didn't make a vlog of r o H minus concentration. What I give me 2.79 and again we can solve for AKI Cheesy. Are you crazy? In pages, he could 14 minus p oi, which you people threw 14 minus 2.7 night. And that gives me a love in port 21. Okay, so are you Hoyt and her pH that are always Constitution is found

In this question We have 0.15 Mueller Ammonia solution. We have to calculate concentration of the O. H minus ions. Also you have to calculate the P. H. And P. O. H. All right now we have to set up that I stable ammonia plus water. NH four plus and O H minus all in equal solution. Initial concentration of ammonia 0.15 mona. And we'll ignore this one in each full no concentration here, no concentration here. Alright and things concentration -6 last six glass, eggs equilibrium concentration of that ammonia 0.15 -X. And here eggs eggs. All right now we know the value of KB means based ionization constant Of Ammonia 1.8 times 10 to the Power -5. Now Gaby KB will be concentration of Ammonia Mayan and H -1 means eggs times X. X square divided by the concentration of ammonia which is 0.15 minus x. Okay baby let's put the hello of Kv 1.8 times 10 to depart negative five X. Square 0.15. These eggs will be negligible. So we're ignoring this one. All right. Mhm. Now x. Will be 1.6 Times 10 to the power negative three. So X. Means here concentration of which miners concentration of In each four plus. Now We can write therefore concentration of O. H. is 1.6. 10 to the power -3. More. Like then we'll calculate P. O. H. Negative law, concentration of wage means 1.6 times 10 to the power negative three. My nurse -2.79. So it will come Positive 2.79. So this is the follow up your weight. Now we have to find ph b eight is 14 minus P. O. H. Which is 14 -2.79. 11.21. So the ph is 11.21 p o h 2.79 And concentration of hydro niA. Oh, it's not hide Ronnie. Um sorry, concentration of O H minus ions is 1.6 times 10 to the power minus three.


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