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Tommy Broadley How does chemistry affect our way of
Find out and write down the uses, with explanations, of:
Mg(OH)2 in medicine
BaSO4 in medicine
Ca(OH)2 in agriculture
Mg(OH)2 Suspensions of magnesium hydroxide in water (also known as milk of magnesia) are used
as an antacid to neutralize stomach acid, and a laxative. Milk of magnesia is sold for medical use as
chewable tablets and is primarily used to alleviate constipation, but also to relieve indigestion and
heartburn. It can also be applied and massaged in to relieve symptoms of dandruff.
BaSO4 Barium sulphate is frequently used clinically as a radio contrast agent for X-ray imaging and
other diagnostic procedures. It is most often used as a 'barium meal' and is administered orally as a
suspension of fine particles in an aqueous solution. It is also used as root canal fillings.
Ca(OH)2 Calcium hydroxide is used in agriculture to adjust pH, since many soils are acid, whereas
most crops grow better in near-neutral soils. It also provides calcium essential to plant cell walls,
shoots and root-tips. It can be used as lime water too.