6d 19

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Jenna 1G
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Joined: Fri Sep 24, 2021 7:05 am

6d 19

Postby Jenna 1G » Fri Jan 28, 2022 7:57 pm

6D.19 A sample of CH3NH3Cl of mass 15.5 g is dissolved in water to make 450. mL of solution. What is the pH of the solution?
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Sophia Schiro
Posts: 102
Joined: Fri Sep 24, 2021 5:07 am

Re: 6d 19

Postby Sophia Schiro » Fri Jan 28, 2022 9:26 pm

For this problem, you would find the molarity by dividing the mass of CH3NH3Cl by the molar mass, and then dividing this by the volume. Then you make an ice table aand use this as the initial concentration for CH3NH3+. Then you would use the Ka expression to find the value of x, which is the concentration of H3O+. You can take the negative log of this value to find the pH.
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