Average rate =
\(-\left[\frac{\text { Final concentration }-\text { Initial concentration }}{\text { Time interval }}\right]\) \(=-\frac{\Delta[\mathrm{R}]}{\Delta \mathrm{t}}\) \(=-\left[\frac{\left[\mathrm{R}_{2}\right]-\left[\mathrm{R}_{1}\right]}{\mathrm{t}_{2}-\mathrm{t}_{1}}\right]=-\left[\frac{0.02-0.03}{25}\right]\) \(=-\left[\frac{-0.01}{25}\right]\) Average rate \(=4 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~min}^{-1}\) \(4 \times 10^{-4}\) \(60 \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\) \(=6.66 \times 10^{-6} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\) Hence average rate \(=4 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~min}^{-1}\) Average rate \(=6.66 \times 10^{-6} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
\(4 \times 10^{-4}\)
60 mol \(L^{-1} S^{-1}\)
\(=6.66 \times 10^{-6} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
Hence average rate \(=4 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~min}^{-1}\)
Average rate \(=6.66 \times 10^{-6} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
