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A proton is moving with kinetic energy 5 × 10-27J. What is the velocity of the proton?
The skeletal structure of CH3COOH as shown below is correct, but some of the bonds are shown incorrectly.Write the correct Lewis structure for acetic acid.
Identify the oxidising and reducing agent in following chemical reactions :
(i) $2 M g + S O _2 \longrightarrow 2 M g O + S$
(ii) $2 Cu ^{2+}+4 I ^{-} \longrightarrow 2 CuI + I _2$
(iii) $SO _2+2 H _2 S \longrightarrow 2 H _2 O +3 S$
(iv) $S n ^{2+}+ 2 H g ^{2+} \longrightarrow H g _2{ }^{2+}+ Sn ^{4+}$
→(i) $2 M g + S O _2 \longrightarrow 2 M g O + S$
(ii) $2 Cu ^{2+}+4 I ^{-} \longrightarrow 2 CuI + I _2$
(iii) $SO _2+2 H _2 S \longrightarrow 2 H _2 O +3 S$
(iv) $S n ^{2+}+ 2 H g ^{2+} \longrightarrow H g _2{ }^{2+}+ Sn ^{4+}$
Derive the relationship between isothermal and free expansion of an ideal gas.
An electron is in one of the 3d orbitals. Give the possible values of n, l and ml for this electron.
On the basis of the equation pH = –log [H+], the pH of 10–8mol dm–3 solution of HCl should be 8. However, it is observed to be less than 7.0. Explain the reason.
What happens when:
- Bromoethane is treated with zinc and hydrochloric acid?
- Hydrogen is passed into 2-bromopropane in the presence of palladium?
Calculate the free energy change when 1 mole of NaCl is dissolved in water at 298K. (Given, lattice energy of NaCl = -777.8kJ mol-1, hydration energy = -774.1kJ mol-1 and $\Delta\text{S}=0.043\text{kJ K}^{-1}\text{mol}^{-1}$ at 298K).
→Write the structures of products (A and B) of the following reactions:
→- $\text{HC}\equiv\text{CH}\xrightarrow{\text{Na}}\text{A}\xrightarrow{\text{CH}_3\text{Br}}\text{B}$
- $\text{BrH}_2\text{C}-\text{CH}_2\text{Br}\xrightarrow[\text{KOH}]{\text{Alcoholic}}\text{A}\xrightarrow{\text{NaNH}_2}\text{B}$
What do you meant by sublimation?