Question
Indicate the $\sigma$ and $\pi$ bonds in the following molecules:
CH
2=C=CH2.
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Find the oxidation number of carbon in following compounds.
CH3OH, CH2O, HCOOH, C2H2
CH3OH, CH2O, HCOOH, C2H2
At 298K.Kp for the reaction $\text{N}_2\text{O}_4(\text{g})\rightleftharpoons2\text{NO}_2(\text{g})\ \text{is}\ 0.98.$ Predict whether the reaction is spontaneous or not.
→→
$\text{MnO}^{2-}_4$ undergoes disproportionation reaction in acidic medium but $\text{MnO}^-_4$ does not. Give reason.
→Balance the following equation:
$\text{Br}_2+\text{H}_2\text{O}_2\xrightarrow{ \ \ \ \ \ \ \ \ }\text{BrO}_3^-+\text{H}_2\text{O}$ (in acidic medium)
→$\text{Br}_2+\text{H}_2\text{O}_2\xrightarrow{ \ \ \ \ \ \ \ \ }\text{BrO}_3^-+\text{H}_2\text{O}$ (in acidic medium)
Explain the free expansion of gas.
Is it safe to stir IM AgNO3 solution with copper spoon?
$\text{E}^\circ_\frac{\text{Ag}^+}{\text{Ag}}=+0.80\text{V}$
$\text{E}^\circ_\frac{\text{Cu}^{2+}}{\text{Cu}}=+0.34\text{V}$
→$\text{E}^\circ_\frac{\text{Ag}^+}{\text{Ag}}=+0.80\text{V}$
$\text{E}^\circ_\frac{\text{Cu}^{2+}}{\text{Cu}}=+0.34\text{V}$
Write the name of cell in which chemical energy is converted into electrical energy.
An element with mass number 81 contains $31.7 \%$ more neutrons as compared to protons. Assign the atomic symbol.
→Wavelengths of different radiations are given below:
$\lambda(\text{A})=300\text{nm},\ \lambda(\text{B})=300\mu\text{m},\ \lambda(\text{C})=3\text{nm},\ \lambda(\text{D})=30\mathring{\text{A}}$
Arrange these radiations in the increasing order of their energies.
→$\lambda(\text{A})=300\text{nm},\ \lambda(\text{B})=300\mu\text{m},\ \lambda(\text{C})=3\text{nm},\ \lambda(\text{D})=30\mathring{\text{A}}$
Arrange these radiations in the increasing order of their energies.