Question

The behavior of hydrogen gas towards litmus paper is

• A. neutral behavior
• B. turns red litmus to blue
• C. turns blue litmus to red
• D. litmus paper stats burning

Answer 1

The correct option is A

neutral behavior

Explanation of correct option:

The correct option is A:

1. A type of paper that changes color in response to the acidity of the solution it is dipped in and can thus be used to measure acidity.
2. Acid turns blue litmus paper to red and base turns red litmus paper to blue.
3. The hydrogen gas does not change the color of litmus paper because it is neither acidic nor basic.
4. It behaves as amphoteric at standard temperature and pressure and due to this, it is tasteless and colorless.
5. It has the $pH$ value $7$at 25 degree celcius.

Explanation of incorrect options:

Option B:

• The hydrogen is amphoteric so it doesn't turn red litmus to blue.

Option C:

• Due to its amphoteric nature, the hydrogen can't turn blue litmus into red

Option D:

• The litmus paper never burns in dilute or concentrated acid. It only changes its color.

Final Answer: The behavior of hydrogen gas towards litmus paper is neutral.