Subject: Physical Chemistry · Chapter: Chemical Kinetics · Topic: Chemical Kinetics – General · Exam: JAM 2001-2022 · Marks: 2 · Difficulty: Hard
A solution containing 250 ppm of $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$ (formula weight $=250$ ) has an absorbance of 0.1 measured in 1 cm cell at 600 nm . Calculate the molar absorptivity ( $\varepsilon$ ) of $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$ in $\mathrm{L} \mathrm{M}^{-1} \mathrm{cm}^{-1}$. When 25 mL of $\mathrm{Na}_{2}$ EDTA (aq) solution is titrated against $\mathrm{Na}_{2}$ EDTA (aq) solution, it consumes at 50 mL of $\mathrm{Na}_{2}$ EDTA (aq) solution. Calculate the concentration of $\mathrm{Na}_{2} \mathrm{EDTA}(\mathrm{aq})$ solution in moles $\mathrm{L}^{-1}$.
Answer
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