Flashcards in 2.2 Deck (15):
the body functions properly due to what?
a series of complex chemical reactions
acids are neutralised by what?
reaction with oxides,hydroxides or carbonates to form salts and other products
how hydrochloride acid is neutralised by sodium hydroxide
HCI + NaOH ---> H2O + CaCI + O2
hydrochloric acid + sodium hydroxide ----> water + sodium chloride
if acid is reacted with a carbonate,what is also produced?
hydrogen ions (H+) make solutions what?
hydroxide ions (OH-) make solutions what?
neautralisation reaction: an acid and an alkaline substance reacting to form a salt and water equation:
H+(aq) + OH-(aq)--->H2O(L)
the stomach works most effectively in what conditions?
acid by helping to break down food
how does an antacid neautralise excess stomach acid to help treat heartburn/nausea
like acids, alkalis split up when dissolved in water.
they release hydroxide ions (OH-)
sodium hydroxide: alkali
NaOH---> Na+ + OH-
sodium hydroxide ---> sodium ion + hydroxide ion
we use alkalis like ____ and ____ in antacids (weak bases) to do what?
and magnesium hydroxide Mg(OH)2 to treat stomach acid
what does the hydrochloric acid do in stomach
helps enzymes break down the protein that we eat
helps us protect from microbes in our food
what does excess acid do
make us feel uncomfortable
heartburn and nausea
what do pharmacologists -antacids do?
test the effectiveness of antacids in terms of how efficiently they neutralise excess stomach acid before they are sold to consumer