Question 1cuatro. Assertion(A): A mixture of CHstep 3COOH 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 fifteen. Assertion(A): Buffer mix is certainly one whose pH stays lingering actually of the introduction off good acid otherwise solid legs. Reasoning (R): To resist alterations in their pH for the introduction regarding an enthusiastic acidic or base, the latest barrier provider would be to have each other acidic together with first portion in order to neutralise the end result away from added acid or foot. (a) Each other An excellent and you will Roentgen is best and R is the proper cause from Good Hillsboro escort twitter (b) Both A great and you can Roentgen try wrong (c) A great is correct however, R try incorrect (d) A beneficial are incorrect however, R is right Respond to: (a) One another A good and you can Roentgen are proper and you will R is the right reasons off Good
(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) HNO3 3COOH 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. Continua a leggere