Question
Explain why CO2-3 ion cannot be represented by a single Lewis structure. How can it be best represented?
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(i) Internal energy (ii) Heat
(i) Internal energy (ii) Heat
Consider the following equilibrium at 2773K
$\text{H}_2(\text{g})+\text{Cl}_2(\text{g})\rightleftharpoons2\text{HCl}(\text{g})$
Initially 0.25M H2 and 0.25MCl2 are introduced into a reaction vessel and the system in allowed to attain equilibrium. At equilibrium the concentrations of H2(g) and Cl2(g) became 0.0314M. Calculate Kc and Kp.
→$\text{H}_2(\text{g})+\text{Cl}_2(\text{g})\rightleftharpoons2\text{HCl}(\text{g})$
Initially 0.25M H2 and 0.25MCl2 are introduced into a reaction vessel and the system in allowed to attain equilibrium. At equilibrium the concentrations of H2(g) and Cl2(g) became 0.0314M. Calculate Kc and Kp.
Yellow light emitted from a sodium lamp has a wavelength $(\lambda)$ of 580 nm. Calculate the frequency (ν) and wavenumber $(\bar{\text{v}})$ of the yellow light.
→Define hydrogen bond. Is it weaker or stronger than the van der Waals forces?
Derive the Rydberg formula.
A sparingly soluble salt gets precipitated only when the product of concentration of its ions in the solution (Qsp) becomes greater than its solubility product. If the solubility of BaSO4 in water is 8 × 10–4mol dm–3. Calculate its solubility in 0.01mol dm–3 of H2SO4.
The pH of 0.005M codeine (C18H21NO3) solution is 9.95. Calculate its ionization constant and pKb.