Question
Draw the resonance structures for the following compounds. Show the electron shift using curved-arrow notation.
C6H5-CHO.
C6H5-CHO.
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How many electrons in an atom have the following quantum numbers? n = 3, l = 0.
How many significant figures are present in the following?
500.0
500.0
Comment on the thermodynamic stability of $NO ( g )$, given
$\frac{1}{2} N_2(g)+\frac{1}{2} O _2(g) \rightarrow NO ( g ) ; \quad \Delta_r H ^{\ominus}=90 kJ mol ^{-1}$
$NO ( g )+\frac{1}{2} O _2(g) \rightarrow NO _2(g) ; \quad \Delta_r H ^{\ominus}=-74 kJ mol ^{-1}$
→$\frac{1}{2} N_2(g)+\frac{1}{2} O _2(g) \rightarrow NO ( g ) ; \quad \Delta_r H ^{\ominus}=90 kJ mol ^{-1}$
$NO ( g )+\frac{1}{2} O _2(g) \rightarrow NO _2(g) ; \quad \Delta_r H ^{\ominus}=-74 kJ mol ^{-1}$
How many moles of oxygen are required for complete combustion of one mole of propane?
The entropy of $Mg ^{+2}$ ion in aqueous solution will be more before hydration or after hydration.
→How many significant figures are present in :
5005
5005
Write IUPAC names of the following compound:
$\text{CH}_3\text{CH}=\text{C}(\text{CH}_3)_2$
→$\text{CH}_3\text{CH}=\text{C}(\text{CH}_3)_2$
Identify the structure of A and B;
$\text{CH}_3-\text{CH}_2\text{COOH}\xrightarrow{\text{KOH}}\text{A}\xrightarrow{\text{Kolbe's electrolysis}}\text{B}$
$\text{CH}_3-\text{CH}_2\text{COOH}\xrightarrow{\text{KOH}}\text{CH}_3\text{CH}_2\text{COO}^-\text{K}^+\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{A}\\\xrightarrow{\text{Kolbe's electrolysis}}\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_3\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{B}$
→$\text{CH}_3-\text{CH}_2\text{COOH}\xrightarrow{\text{KOH}}\text{A}\xrightarrow{\text{Kolbe's electrolysis}}\text{B}$
$\text{CH}_3-\text{CH}_2\text{COOH}\xrightarrow{\text{KOH}}\text{CH}_3\text{CH}_2\text{COO}^-\text{K}^+\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{A}\\\xrightarrow{\text{Kolbe's electrolysis}}\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_3\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{B}$
What is Kc for the following equilibrium when the equilibrium concentration of each substance is:
[SO2]= 0.60M, [O2] = 0.82M and [SO3] = 1.90M?
2SO2(g) + O2(g) ⇌ 2SO3(g)
[SO2]= 0.60M, [O2] = 0.82M and [SO3] = 1.90M?
2SO2(g) + O2(g) ⇌ 2SO3(g)
Refer to the periodic table given in your book and now answer the following questions:
Select three metals that can show disproportionation reaction.
Select three metals that can show disproportionation reaction.