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suppose you use a 25.0 ml hcl sample to simulate the acid concentration in the stomach and its reaction to magnesium hydroxide, a common ingredient in antacids. if 14.10 ml of 0.128 m mg(oh)2 was required to neutralize the acid in a titration, what was the concentration of the acid?



Answer :

the concentration of HCl is 0.036M

What is concentration of a solution?

The concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution. A concentrated solution is one that has a relatively large amount of dissolved solute.

2HCl +Mg(OH)2 → MgCl2 + 2H2​O

In this chemical reaction, the molar ratio is 1:2 between HCl and Mg(OH)2.

So,2 moles of HCl =1 moles of Mg(OH)2

2M HCl × Volume of HCl = M Mg(OH)2 × Volume of Mg(OH)2

2M HCl =  M Mg(OH)2 ×volume of Mg(OH)2  / volume of HCl

2M HCl =  0.128*14.10/ 25 = 0.072

M HCl = 0.072/2 = 0.036M

So, the concentration of HCl is 0.036M

To know about concentration from the link

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