How much 0.1N HCl will a tablet of 200 mg Mg(OH)2 neutralize?

1 Answer
anor277
Feb 3, 2018

A volume of approx. #70*mL#....

Explanation:

We need (i) a stoichiometric equation.....

#Mg(OH)_2(s) + 2HCl(aq) rarr MgCl_2(aq) + 2H_2O(l)#

And (ii), equivalent quantities of magnesium hydroxide...

#n_"magnesium hydroxide"=(200xx10^-3*g)/(58.32*g*mol^-1)=3.43xx10^-3*mol#.

And finally we take the quotient....

#(3.43xx10^-3*mol)/(1/2xx0.10*mol*L^-1)xx1000*mL*L^-1=??*mL#

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