8. A zero Order reaction Xproduct, with an initial concentration 0.02M has a half-life of 10 mins if one starts with concentration 0.04M, then the half-life is _____________a) 10s b) 5min c) 20min d) can’t be predicted

8. A zero Order reaction Xproduct, with an initial concentration 0.02M

1.	8. A zero Order reaction Xproduct, with an initial concentration 0.02M has a half-life of 10 mins if one starts with concentration 0.04M, then the half-life is _____________a) 10s b) 5min c) 20min d) can’t be predicted
Answer» c. 20 min EXPLANATION:zero ORDER r×n t1/2 = AD/2kt1/2 = AD/2k , 10= 0.02/2k K= 0.02/2×10×100 = 1/1000t1/2= AD/2k = 0.04 × 1000 / 2×1×100 =20 min. Therefore option c is CORRECT. Hope it will help you.