Reasoning (R): An acidic buffer includes a failure acid and the salt of weak acid with good foot

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.

Concern 15. Assertion(A): Barrier mixture is one whose pH stays lingering actually by addition from solid acidic or solid foot. Cause (R): To resist alterations in http://datingranking.net/escort-directory/long-beach/ their pH to your introduction of an enthusiastic acid otherwise feet, the latest barrier service is to incorporate both acid along with first areas in order to neutralise the effect out-of added acid or base. (a) Both An effective and you can Roentgen are right and Roentgen ‘s the best reason away from Good (b) Both A great and you will R are wrong (c) An effective is right but Roentgen are wrong (d) A good are wrong however, Roentgen is right Respond to: (a) Both A beneficial and you may R are right and R ‘s the right explanation regarding Good

Concern 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) 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.

Question eleven. (a) Cooking soft drink (b) Tomato (c) Soap and water (d) Sink vacuum Address: (b) Tomato Reason: Tomato features pH below eight and is acid while other people possess pH higher than 7 as they 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 colored coffees (b) Cooking soda,, Drinking water (c) Ammonia, Gastric acid (d) Whiten , Tomato Answer: (a) Lime , Black colored coffees

1. Acid choices bitter, transforms the newest bluish litmus in order to yellow and you will reacts that have metals such since zinc and you can provides hydrogen gasoline.
2. Ft needs sour, turns the latest reddish litmus so you’re able to bluish and soapy to touch.

Explain the Arrhenius concept of acidic and you may feet with analogy. Answer: 1. Predicated on Arrhenius design, an acidic is actually a compound you to definitely dissociates to give hydrogen ions within the water. Such as for example,

Matter step 3. Which are the constraints of Arrhenius layout? Answer: step 1. Arrhenius idea cannot explain the actions from acids and foot from inside the non-aqueous solvents instance acetone, tetrahydro furan.