The rate of a first order reaction is 3 × 10 mol L s at 25 minutes and 2 × 10 mol L s at 75 minutes — NEET Chemistry Past Papers Chemistry Question
Question
The rate of a first order reaction is 3 × 10 mol L s at 25 minutes and 2 × 10 mol L s at 75 minutes after initiation. Find the half life of the reaction. [log3 = 0.48, log2 = 0.3] (A) min (B) min (C) 60 min (D) 90 min –4 –1 –1 –4 –1 –1 250 3 200 3 (1) (2) –4 –1 –1 –4 –1 –1 250 3 200 3 Two liquids A and B on mixing form an ideal
💡 Solution & Explanation
ution. At 300 K, the vapour pressure of solution containing 1 mole of A and 3 mole of B is 550 mm of Hg. At the same temperature, if 1 more mole of B is further added to this solution, the vapour pressure of the solution increases by 10 mm of Hg. The vapour pressure of A and B in their pure state (in mm of Hg) is respectively : (1) 400, 600 (2) 500, 500 (3) 600, 400 (4) 400, 400 (1) 400, 600 (2) 500, 500 (3) 600, 400 (4) 400, 400 The values of conductivity of material A, B and C at 298.15 K in Sm are 2.1 × 10 , 1.0 × 10 and 1 × 10 . Choose the correct answer from the options given below : (1)