Browse Questions

# For the first order reaction at $27^{\circ}C,$ the radio of time required for $75 \%$ completion to $25 \%$ completion of reaction is :

$\begin {array} {1 1} (1)\;3.0 & \quad (2)\;2.303 \\ (3)\;4.8 & \quad (4)\;0.477 \end {array}$

(3) 4.8