(ii) Without using any indicator, describe a chemical test to show that a solution is an acid.
Tanpa menggunakan penunjuk, huraikan satu ujian kimia untuk menunjukkan bahawa suatu larutan itu berasid.
[2 marks] [2 markah]
I believe you need to be specific with the description of the hydrogen gas test.
A pure metal such as magnesium is added to the solution in a test tube, producing gas bubbles.
When a burning splinter is brought near to the gas released, a ‘pop’ sound is heard, indicating the presence of hydrogen gas, thus confirming the identity of acid.
Thank you so much!