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Mortsquinnitaylei Mortsquinnitaylei
  • 20-10-2016
  • Chemistry
Answered

Suppose that the stomach contains 0.200l of 0.05m hcl. what mass of the antacid mg(oh)2 is required to completely neutralize all of the hcl

Verified Answer :

tweetynerd21 tweetynerd21
  • 20-10-2016

1) Recognize the balanced equation is:

2HCl + Mg(OH)2 = MgCl2 + 2HOH

2) Find moles of HCl

(0.05moles/1L)(.200L) = .01 moles HCl

3) Use conversions to find moles of Mg(OH)2.

(.01mol HCl 1mol Mg(OH)2)/ 2mol HCl =.005 mol Mg(OH)2

4) .005 58.32 (the molar mass) = .2916g Correct sig figs = 0.29g Mg(OH)2


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