alculating the number of moles, mass, and volume of two substances with the aim

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This topic contains 1 reply, has 0 voices, and was last updated by  Natthe 10th May 2018 at 5:29 pm.

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    Natthe
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    I am not at all sure about how to go about this problem, if someone could show me how it is done I would really appreciate it.

    The two ingediants I am given are:

    Solution of tris at 2 percent (m/V) (tris has a molar mass of 121.1 g/mol)

    Solution of HCl at 1M

    I am then asked to:

    Calculate the number of moles and the mass of tris base necessary to realize 100 mL of solution. Calculate the corresponding volume using the solution of 2 percent. Calculate the molar volume of chlorohydric acid necessary to obtain a pH of 8.

    All of this is supposed to be in preparation for an experiment, the next step is to:

    In a measuring vial, pour the adequate volume of tris 2 percent, then that of HCL 1M, and finally complete with the quantity of water sufficient for 100mL.

    Thanks in advance for any and all help.

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