Reason (R): An acid shield includes a failure acidic therefore the sodium away from poor acid that have strong base

Question 1cuatro. Assertion(A): A mixture of CH₃COOH and CH₃COONH₄ is an acidic buffer. (a) A is correct but R is wrong. (b) A is wrong but R is correct. (c) Both A and R are correct and R is the correct explanation of A (d) Both A and R are wrong Answer: (b) A is wrong but R is correct.

Matter 15. Assertion(A): Boundary combination is one whoever pH remains ongoing also of the addition off strong acidic otherwise good legs. Cause (R): To resist changes in its pH for the introduction out of an acidic otherwise legs, the fresh barrier services should include both acid and additionally earliest areas so as to neutralise the effect regarding additional acidic or base. (a) Each other A great and you can Roentgen try right and you will Roentgen ‘s the correct need of A (b) Both A good and R is completely wrong (c) A is correct but R try completely wrong (d) An effective was incorrect however, R is correct Address: (a) Both A and you may Roentgen is actually right and Roentgen is the proper factor away from A beneficial

Matter dos

(a) NH₃ (b) H₂O (c) RNH₂ (d) BF₃ Answer: (d) BF₃ Reason: BF₃ is a Lewis acid whereas others are Lewis base.

Question 3. (a) SiF₄ (b) SF₄ (c) FeCl₃ (d) NH₃ Answer: (d) NH₃ Reason: NH₃ is a Lewis base whereas others are Lewis acid.

Question 4. (a) HCl (b) H₂SO₄ (c) CH₃COOH (d) HNO_{3 3}COOH Reason: CH₃COOH is a weak acid whereas others are strong acids.

Question 5. (a) HCOOH (b) CH₃COOH (c) Lactic acid (d) HCI Answer: (d)HCI Reason: HCl is a strong acid whereas others are weak acids.

Question 6. (a) HClO₄ (b) HCI (c) HSO₄ (d) H₂SO₄ Answer: (c) HSO₄. Reason: HSO₄ is a very weak base whereas others are strong acid.

Question 7. (a) NH₂ – (b) escort review Salt Lake City O₂ – (c) H – (d) OH – Answer: (d) OH – Reason: OH – is a very weak acid whereas others are strong bases.

Question 9. (a) F – (b) CH₃COO (c) O₂ (d) NO₂ – Answer: (c) O 2- Reason: O 2- is a strong base whereas others are weak bases.

Question 10. (a) Vinegar (b) Black coffee (c) Sea water (d) Orange juice Answer: (c) Sea water Reason: Sea water is basic and has pH > 7 whereas others are acidic and have pH < 7.

Matter 11. (a) Cooking soda (b) Tomato (c) Soap and water (d) Drain cleaner Answer: (b) Tomato Reason: Tomato possess pH lower than eight and is acid while others enjoys pH higher than eight and are first.

Question 12. (a) CH₃COOH + CH₃COONa (b) NH₄OH + NH₄CI (c) H₂CO₃ + NaHCO₃ (d) NaOH + NaCl Answer: (d) NaOH + NaCl Reason: NaOH + NaCl is not a buffer mixture whereas others are buffer mixtures.

Answer: (c) CH

Question 5. (a) Orange juice, Tomato juice (b) Soapy water, Sea water (c) Water, H₃O (d) Bleach , Ammonia solution Answer: (c) Water, H₃O

Question 4. (a) Orange, Black coffees (b) Cooking soda,, H2o (c) Ammonia, Gastric acid (d) Bleach , Tomato Respond to: (a) Tangerine , Black colored java

1. Acidic tastes bitter, turns the brand new bluish litmus to help you yellow and you may responds that have gold and silver coins such as zinc and produces hydrogen gasoline.
2. Foot needs bad, converts the purple litmus so you can bluish and you can soapy to the touch.

Give an explanation for Arrhenius concept of acidic and you may legs which have analogy. Answer: step one. According to Arrhenius design, an acid try a material one dissociates to provide hydrogen ions in water. Such,

Question step 3. Do you know the limitations away from Arrhenius concept? Answer: 1. Arrhenius idea cannot give an explanation for habits off acids and ft during the non-aqueous solvents eg acetone, tetrahydro furan.