Question 1cuatro. Assertion(A): A mixture of CH_{step 3}COOH 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 mixture is the one whoever pH remains ongoing even by the introduction out of solid acid or strong legs. Cause (R): To resist alterations in the pH for the introduction of a keen acid otherwise legs, brand new shield solution escort Pompano Beach is always to incorporate one another acid in addition to first areas so as to neutralise the outcome out-of added acidic otherwise base. (a) One another Good and you may R try proper and you can Roentgen is the best factor of A great (b) Both A good and you can Roentgen are wrong (c) An excellent is correct but Roentgen is completely wrong (d) A beneficial was incorrect however, R is correct Answer: (a) Both A beneficial and you may R is actually correct and you may R is the proper need of 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) 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 11. (a) Baking soft drink (b) Tomato (c) Soap and water (d) Drain cleaner Address: (b) Tomato Reason: Tomato have pH below 7 and it is acid while someone else have pH more than 7 and they are very 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

Matter 4. (a) Orange, Black coffees (b) Cooking soft drink,, Liquids (c) Ammonia, Stomach acid (d) Whiten , Tomato Address: (a) Orange , Black colored coffee

1. Acidic preferences bad, turns the fresh new bluish litmus in order to red and responds that have metals such as for instance once the zinc and you can produces hydrogen gas.
2. Ft tastes bad, turns the new purple litmus to help you blue and soapy to touch.

Give an explanation for Arrhenius notion of acidic and ft with example. Answer: step one. Considering Arrhenius layout, an acidic is a material one dissociates provide hydrogen ions in water. Instance,

Matter 3. Exactly what are the limits regarding Arrhenius design? Answer: 1. Arrhenius principle will not explain the behavior from acids and you will base in the low-aqueous solvents such as for example acetone, tetrahydro furan.