Which of the following chemical properties are shown by dilute hydrochloric acid ? (i) It turns blue litmus red (ii) It turns red litmus blue (iii) It reacts with zinc and a gas is evolved (iv) It reacts with solid sodium carbonate to give brisk effervescence
(a) (i) and (ii) only (b) (i) and (iii) only (c) (i), (iii) and (iv) only (d) (ii), (iii) and (iv) only
Your friends are correct. Correct option is c.
i) Dil. HCl will turn blue litmus to red because it is acidic in nature
iii) It reacts with Zn to evolve a gas (H2). Reaction is shown below :
Zn + 2 HCl → ZnCl2 + H2
iv) It reacts with solid Sodium carbonate which is base to form salt and water.
Na2CO3 + 2HCl → 2NaCl + H2O + CO2
i) Dil. HCl will turn blue litmus to red because it is acidic in nature
iii) It reacts with Zn to evolve a gas (H2). Reaction is shown below :
Zn + 2 HCl → ZnCl2 + H2
iv) It reacts with solid Sodium carbonate which is base to form salt and water.
Na2CO3 + 2HCl → 2NaCl + H2O + CO2