Question

1)an aqua solution of sodium sulphate is neutral explain
2) an aqueous solution of Ammonium Sulphate is acidic explain
3) aqueous solution of sodium carbonate na 2 co 3 is basic in natur. Explain
4) magnesium Hydroxide milk of magnesia is often used as antacids .explain

Answer 1

nature of a salt depends upon its constituents
if a salt is made of weak acid and strong base then salt would be basic and vise versa
so.,
1: Naoh+h2so4 -both strong hence neutral salt
2: nh4oh + h2so4 weak base strong acid hence acidic
3: Naoh+ h2co3 - strong base + weak acid hence basic salt
4: mgoh2 ie magnesium hydroxide is basic and hence reduce acidity of stomach and used as antacid
hope it helps