An antacid tablet of mass 900.0 mg contains magnesium hydroxide and inert ingredients. It is placed in a flask containing 50.00 cm3 of 0.6365 M hydrochloric acid. After the reaction is complete, the excess acid required 18.60 cm3 of 0.1242 M sodium hydroxide for neutralization. Calculate the percentage of magnesium hydroxide in the tablet.

Question

An antacid tablet of mass 900.0 mg contains magnesium hydroxide and inert ingredients. It is placed  in  a  flask  containing  50.00  cm3 of  0.6365  M  hydrochloric  acid.  After  the  reaction  is complete,  the  excess  acid  required  18.60  cm3 of  0.1242  M  sodium  hydroxide  for neutralization. Calculate the percentage of magnesium hydroxide in the tablet.

anonymous · Answer

i'm getting 0.22% of magnesium hydroxide