chem

Question 1

What do acids produce when they react with metals?

Answer 1

Metal salt and Hydrogen Gas

The general reaction format is: Acid + Metal → Salt + Hydrogen Gas.

Question 2

Provide an example of an acid reacting with a metal.

Answer 2

2HCl + Zn → ZnCl2 + H2

This reaction involves zinc granules and dilute Hydrochloric acid.

Question 3

What do bases produce when they react with metals?

Answer 3

Salt and Hydrogen gas

Not all metals react with bases; the metal must be more reactive than those in the base.

Question 4

Provide an example of a base reacting with a metal.

Answer 4

2NaOH + Zn → Na2ZnO2 + H2

This reaction involves zinc granules and sodium hydroxide solution.

Question 5

How can you test for the presence of hydrogen gas released in reactions?

Answer 5

Bring a burning candle near gas bubbles; it bursts with a pop sound.

This is a common laboratory test for hydrogen gas.

Question 6

What do acids produce when they react with metal carbonates and metal hydrogencarbonates?

Answer 6

Salt, Carbon dioxide, and Water

The general reaction format is: Metal carbonate/Metal hydrogen carbonate + Acid → Salt + Carbon dioxide + Water.

Question 7

Provide an example of an acid reacting with a metal carbonate.

Answer 7

2HCl + Na2CO3 → 2NaCl + CO2 + H2O

This reaction demonstrates the interaction between hydrochloric acid and sodium carbonate.