Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Chemical Sciences Electrochemistry Kohlrausch’s Law and Its Applications
At 25°C the constant in the Onsager equation are A= 0.228 9 M-1/2 and B=60.1992\(\Omega\)-¹ cm² mol¹ M-1/2. Calculate the molar conductivities of 0.01 M HCl solution and 0.01 M KCI solution. Given: \(\lambda_{\infty}\) m (H) = 349.82\(\Omega^{-1}\)' cm² mol', \(\lambda_{\infty}\) m (CI)=76.35\(\Omega^{-1}\) ' cm² mol, and \(\lambda_{\infty}\) m (K)=73.52 2\(\Omega^{-1}\) cm² mol¹.
1
140.42 \(\Omega^{-1}\)cm² mol-1
2
130.5 \(\Omega^{-1}\)cm² mol-1
3
200.10 \(\Omega^{-1} \)cm² mol-1
4
240.4 \(\Omega^{-1}\)cm² mol-1