Agas quickly expands in an isolated environment. during the process, the gas exchanges no heat with its surroundings. the process is:
a. isobaric
b. isotonic
c. isothermal
d. isochoric
e. adiabatic

e. adiabatic process

Explanation:

Adiabatic process  -

In the thermodynamic system , an adiabatic process is the one which involves no transfer of mass or heat of the substance , is referred to adiabatic process.

In this process , the temperature need not be constant ,

But only the heat is transferred into or out of the system .

Hence, from the given information of the question,.

The correct option is e. adiabatic process .

10.88 g

Explanation:

We have:                            

[CH₃COOH] = 0.10 M

pH = 5.25

Ka = 1.80x10⁻⁵      

V = 250.0 mL = 0.250 L

The pH of the buffer solution is:  

   (1)

By solving equation (1) for [CH₃COONa*3H₂O] we have:  

Hence, the mass of the sodium acetate tri-hydrate is:

Therefore, the number of grams of CH₃COONa*3H₂O needed to make an acetic acid/sodium acetate tri-hydrate buffer solution is 10.88 g.

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