Chenical properties of acid :
(i) Acids react with metals to form `H_(2)` gas.
` Zn + 2HCl to Zn Cl_(2) + H_(2) uarr `
(ii) Acids turn blue litmus into red.
(iii) Acids react with bases to form salt and water (neutralization reaction )
` underset ("Acid")(HCl) + underset ("Base")(NaOH) to underset ("Salt")(NaCl) + underset ("Water")(H_(2)O)`
