Remember, the pH value of water is 7. Acetic acid (CH₃COOH) is a weak acid while hydrochloric acid (HCl) is a strong acid. Hence, the correct increasing order of acidic strength is water < acetic acid < hydrochloric acid.

When dilute hydrochloric acid is added to iron filings, hydrogen gas and iron chloride are produced. The reaction is as follows: Fe(s) + 2HCI(aq) → FeCl,(aq) + H,

The human excretory system consists of a pair of Kidneys, a pair of ureters, urinary bladder and urethra.

The chemical reaction between dilute hydrochloric acid and granulated zinc is represented as: Zn + 2HCl → ZnCl₂ + H₂ ↑ The product zinc chloride, does not turn the reaction milky. Hydrogen gas evolved is colourless and odourless and ...