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Magnesium metal reacts with aqueous HCl to give H2 gas: Mg(s) + 2 HCl(aq) MgCl2(aq) + H2(g)The gas that forms is found to have a volume of 3.557 L at 25°C and a pressure of 747 mm(Hg). The vapor pressure of water at 25°C is 23.8 mm(Hg). (a) What is the partial pressure of the H2 gas?

 


Apr 22nd, 2015

Kp is defined as.. 
Kp = ([C]^c x [D]^d) / ([A]^a x [B]^b) 

so for this rxn 
Kp = [HCL]^2 / ( [O2]^1 x [H2]^3) = (1.05)^2 / ( (0.525) x (0.445)^3) = 23.8 

Apr 22nd, 2015

um not what I was asking but thank you anyway.

Apr 22nd, 2015

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