MCQ
Correct order of $K_a$ value for given compound
- A$IV > II > III > I$
- B$III > IV > II > I$
- ✓$IV > III > II > I$
- D$IV > III > I > II$
✓
Answer
Correct option: C.
$IV > III > II > I$
c
Acidic strength $\propto \mathrm{K}_{\mathrm{a}} \propto \frac{1}{\mathrm{Pk}_{\mathrm{a}}} \propto \frac{-\mathrm{M}}{+\mathrm{M}} \propto \frac{-\mathrm{I}}{+\mathrm{I}}$
Acidic strength $\propto \mathrm{K}_{\mathrm{a}} \propto \frac{1}{\mathrm{Pk}_{\mathrm{a}}} \propto \frac{-\mathrm{M}}{+\mathrm{M}} \propto \frac{-\mathrm{I}}{+\mathrm{I}}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
When orthoboric acid $({H_3}B{O_3})$ is heated, the residue left is
→What is the separation energy (in $eV$ ) for $Be^{3+}$ in the first excited state in ............... $\mathrm{eV}$ ?
→The standard reduction potentials at $298\,K$ for the following half reactions are given against each
→$Z{n^{2 + }}\,(aq)\, + \,2e\, \rightleftharpoons \,Zn\,(s)\,;\, - \,0.762\,V$
$C{r^{3 + }}\,(aq)\, + \,3e\, \rightleftharpoons \,Cr(s)\,;\, - \,0.740\,\,V$
$2{H^ + }\,(aq)\, + \,2e\, \rightleftharpoons \,{H_2}(g)\,;\,\,\,0.00\,\,\,V$
$F{e^{3 + }}\,(aq)\, + \,e\, \rightleftharpoons \,F{e^{2 + }}(aq)\,;\,\,\,0.770\,\,\,V$
Which is the strongest reducing agent ?
Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below
→$\mathrm{BrO}_{4}^{-} \stackrel{1.82 \mathrm{V}}{\longrightarrow} \mathrm{BrO}_{3}^{-} \stackrel{1.5 \mathrm{V}}{\longrightarrow} \mathrm{HBrO}$$\stackrel{1.0652 \mathrm{V}}{\longrightarrow} \mathrm{Br}_{2} \stackrel{1.595 \mathrm{V}}{\longrightarrow} \mathrm{Br}^{-}$
Then the species undergoing disproportionation is
How many electrons are involved in the following redox reaction?
→$C{r_2}O_7^{2 - } + F{e^{2 + }} + {C_2}O_4^{2 - } \to C{r^{3 + }} + F{e^{3 + }} + C{O_2}$ (Unbalanced)
Match List$-I$ and with List$-II$
Choose the correct answer from the option below :
→| List$-I ($Molecule$)$ | List$-II($Shape$)$ | ||
| $A.$ | $NH_3$ | $I.$ | Square pyramid |
| $B.$ | $BrF_5$ | $II.$ | Tetrahedral |
| $C.$ | $PCl_5$ | $III$ | Trigonal pyramidal |
| $D.$ | $CH_4$ | $IV$ | Trigonal bipyramida |
Major product ' $B$ ' of the following reaction sequence is.
→Carbongene has $X\%$ of $CO_2$ and is used as an antidote for poisoning of $Y.$ Then, $X$ and $Y$ are
→The maximum and minimum melting point of first and second transition series elements respectively are obtained with
Structure of the compound whose $IUPAC$ name is ${3-}$Ethyl$-{2-}$hydroxy${-4}-$methylhex$-{3-}$en$- 5-$ynoic acid is
→