MCQ
The charge in coulombs on N3− ion is:
- A4.80 × 10−19C
- B1.60 × 10−19C
- C−3C
- D1.8 × 10−24C
Explanation:
Charge on one electron = 1.6 × 10−19C
N3− has −3 charge on it.
Charge on three electron = 3 × 1.6 × 10−19C = 4.8 × 10−19C
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$_H^{Br} > \mathop C\limits_1 = \mathop C\limits_2 < _H^{Br}$ $\xrightarrow[{Catalyst}]{{{H_2}}}Br\mathop {C{H_2}}\limits_3 \mathop {C{H_2}}\limits_4 Br$
$Br_{2(l)} + Cl_{2(g)} \rightarrow 2BrCl_{(g)}$
are $30\ kJ\ mol^{-1}$ and $105\ J\ K^{-1} mol^{-1}$ respectively. The temperature at which the reaction will be in equilibrium is ............... $\mathrm{K}$
$R - X \rightarrow R ^{\oplus} X ^{\ominus} \rightarrow R ^{\oplus} \| X ^{\ominus} \stackrel{ Y^\ominus }{\rightarrow} R - Y + X ^{\ominus}$
Ion pair Solvent separated ion pair
A student writes general characteristics based on the given mechanism as:
$(a)$ The reaction is favoured by weak nucleophiles
$(b)$ $R^ \oplus$ would be easily formed if the substituents are bulky
$(c)$ The reaction is accompained by recemization
$(d)$ The reaction is favoured by non-polar solvents.
Which observations are correct $?$
$A$. silica gel $B$. alumina $C$. quick lime $D$. magnesia
Choose the most appropriate answer from the options given below :