Properties of Acids and Alkalis

Which of the following substances are acids ?

• Lemon and baking soda

• Soap and toothpaste.

• Ketchup and grapes

• Detergents and ketchup

Each of the following expresses the solution of HI acid, except __________

• it reacts with HCl acid.

• gas dissolved in water

• it turns blue litmus paper into red

• It contains H⁺ ions

When hydrochloric acid HC1 reacts with sodium hydroxide NaOH, the formed salt is_______

• NaCl₂

• H₂O

• NaCl

• Na₂O

All the following are properties of alkalis EXCEPT __________

• They contain OH^- ions

• They turn red litmus strip into blue

• They can react with sodium hydroxide solution

• They can react with hydrochloric acid solution

Among the basic oxide is __________

• SO₂

• SO₃

• NO₂

• Na₂O

When acids dissolve in water the percentage of _______cations increases

When alkalis dissolve in water the percentage of _______anions increases

When acid react with an alkali, __________ and __________ are produced

NO₂ is an acidic oxide , while SO₂ is a basic oxide

• True

• False

Milk of magnesia contains MgO

• True

• False