Question

which gas is usually when an acid react with a metal? illustrate with an example. Draw the apparatus sketch. how will you conform which gas was it?

Answer 1

✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️

1️⃣Usually, hydrogen gas is liberated when an acid reacts with a metal. For example, let us take the reaction between zinc and sulphuric acid, as per the apparatus set-up shown in the adjacent figure.

2️⃣A few pieces of zinc granules are taken in a test tube and about 5 mL of dilute H2SO4 is added.

3️⃣The gas produced is passed into a soap solution. We find that bubbles of soap solutions are formed.

4️⃣When a burning candle is brought near the soap bubbles, it burns with a pop sound which confirms the presence of hydrogen gas. 

5️⃣Zinc granules react with dilute sulphuric acid to for zinc sulphate and hydrogen gas according to the chemical; equation:

➖➖➖➖➖➖➖➖➖➖➖
✔️Zn + H2SO4 —> ZnSO4 + H2
➖➖➖➖➖➖➖➖➖➖➖


✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️✳️

Answer 2

Explanation:

Metals refers to the natural elements that are hard, shiny, opaque and dense. Non-metals implies those chemical substances that are soft, non-shiny, transparent and brittle. Most metals are hard, except sodium. Most non-metals are soft, except diamond