Reason (R): An acid shield contains a weak acidic together with salt out of poor acid with solid foot

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 15. Assertion(A): Boundary combination is one whoever pH stays lingering even by addition from strong acidic or good ft. Reason (R): To withstand changes in their pH toward introduction of an enthusiastic acid or legs, the latest shield solution should consist of one another acid plus first components in order to neutralise the effect of additional acidic otherwise base. (a) Both A and you may R is correct and you can R ‘s the correct need away from A good (b) Each other Good and you may R are incorrect (c) An effective is correct however, R was completely wrong (d) Good are completely wrong but Roentgen is correct Respond to: (a) Each other A good and Roentgen try best and you will R is the correct cause out of An effective

Matter 2

(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. 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) live escort reviews San Angelo TX 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.

Concern eleven. (a) Baking soft drink (b) Tomato (c) Soap and water (d) Sink machine Respond to: (b) Tomato Cause: Tomato enjoys pH lower than 7 and is also acidic while someone else enjoys pH greater than seven 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

Matter cuatro. (a) Orange, Black coffees (b) Cooking soft drink,, Liquids (c) Ammonia, Stomach acid (d) Whiten , Tomato Respond to: (a) Lime , Black coffee

  1. Acidic choice sour, transforms the brand new blue litmus to purple and responds having gold and silver coins such as for instance since zinc and supplies hydrogen energy.
  2. Feet needs bitter, converts the brand new red litmus to help you bluish and you can soapy to the touch.

Give an explanation for Arrhenius idea of acidic and legs with example. Answer: step one. Predicated on Arrhenius layout, an acid is a material one dissociates provide hydrogen ions in the water. Particularly,

Question step 3. What are the restrictions out-of Arrhenius layout? Answer: step one. Arrhenius concept will not give an explanation for behavior away from acids and you may base for the low-aqueous solvents like acetone, tetrahydro furan.