MCQ
Which is the example of hexadentate ligand
- A$2, 2—$ dipyridyl
- BDimethyl glyoxime
- CAminodiacetate ion
- ✓Ethylene diammine tetra acetate ion $ [EDTA]$

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| Column $-I$ (various solutions) |
Column $-II$ (Their freezing point ) |
||
| $a$ | $0.1\,M$ $BaCl_2$ solution | $p$ | $271\,K$ |
| $b$ | $0.1\,M$ $NaCl$ solution | $q$ | $270\,K$ |
| $c$ | $0.1\,M\, K_3 [Fe(CN)_6]$ solution | $r$ | $268\,K$ |
| $d$ | $0.1\,M\, Al_2 (SO_4)_3$ solution | $s$ | $269\,K$ |
Given : Freezing point of $0.1\,M$ sucrose solution $= 272\,K$ and $F.pt.$ of water $= 273\,K$
Which of the following option show correct matches ?
Product in above reaction is
| Rate Constant | Activation energy | |
| Step $1$ | $k_1$ | $E_{a_1} = 180\ kJ/mol$ |
| Step $2$ | $k_2$ | $E_{a_2} = 80\ kJ/mol$ |
| Step $3$ | $k_3$ |
$E_{a_3} = 50\ kJ/mol$ |