Homework Help: Chemistry!

Posted by Justin on Monday, April 26, 2010 at 5:51pm.

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! - DrBob222, Monday, April 26, 2010 at 6:09pm
See above for a.
b).
delta T = Kb*molality.
solve for molality.

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

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