Question

what is acids? give one used​

Answer 1

$\huge\red{\mid{\fbox{\tt(answer)}\mid}}$Acid, any substance that in water solution tastes sour, changes the colour of certain indicators (e.g., reddens blue litmus paper), reacts with some metals (e.g., iron) to liberate hydrogen, reacts with bases to form salts, and promotes certain chemical reactions (acid catalysis). Examples of acids include the inorganic substances known as the mineral acids—sulfuric, nitric, hydrochloric, and phosphoric acids—and the organic compounds belonging to the carboxylic acid, sulfonic acid, and phenol groups. Such substances contain one or more hydrogen atoms that, in solution, are released as positively charged hydrogen ions (see Arrhenius theory).

Answer 2

Answer:

Acids turn litmus paper to red colour

like citrus acid is present in lemons and orange

Some a acids are reactive but some are not