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Chemistry!

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a)consider the following reaction: Mg(s)+ 2HCl(aq) --> MgCl2 (aq)+H2 (g)

What minimum amount of 1.75 M HCl is necessary to produce 27.5 L of H2 at STP?

b) What is the freezing point of an aqueous solution that boils at 102.1 C?

  • Chemistry! -

    See above for a.
    b).
    delta T = Kb*molality.
    solve for molality.

    delta T = Kf*molality.
    solve for delta T. Subtract from 0o to find freezing point.

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