MCQ
The conjugate acid of $HPO_3^{2 - }$ is
- A${H_3}P{O_4}$
- B${H_3}P{O_3}$
- ✓${H_2}PO_3^ - $
- D$PO_4^{3 - }$
✓
Answer
Correct option: C.
${H_2}PO_3^ - $
(c) $\mathop {{H_2}PO_4^ - }\limits_{{\text{Conjugate acid}}} $ $ \rightleftharpoons $ ${{H}^{+}}+HPO{{_{4}^{2}}^{-}}$ action.
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
In the $n^{th}$ quantum level, the number of electronic subshell is
→From the given sets of quantum numbers the one that is inconsistent with the theory is
The nucleus of helium contains
Match List $-I$ with List $- II$
→| List $- I$ Electronic configuration of elements |
List $- II$ $\Delta_{ i }$ in $kJ\, mol-1$ |
| $(a)$ $1 s ^{2} 2 s ^{2}$ | $(i)$ $801$ |
| $(b)$ $1 s ^{2} 2 s ^{2} 2 p ^{4}$ | $(ii)$ $899$ |
| $(c)$ $1 s^{2} 2 s^{2} 2 p^{3}$ | $(iii)$ $1314$ |
| $(d)$ $1 s ^{2} 2 s ^{2} 2 p ^{1}$ | $(iv)$ $1402$ |
Choose the most appropriate answer from the options given below
For a first order reaction $A \to B$ the reaction rate at reactant concentration of $0.01\,M$ is found to be $2.0 \times {10^{ - 5}}mol\;{L^{ - 1}}{s^1}$. The half life period of the reaction is .......... $\sec$
→Choose the correct statement about henry’s constant.
→$(I)\,\,K_H$ increases with increase in temperature generally.
$(II)\,\,K_H$ decreases with increase in temperature generally.
$(III)\,\, K_H$ is the characteristic constant of gas solvent system.
The increasing order of the acidity of the following carboxylic acids is
The vapour pressure of a solvent decreased by $10\,mm$ of mercury, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is $0.2.$ What should be the mole fraction of the solvent, if decrease in the vapour pressure is to be $20\,mm$ of mercury
→The pair of enantiomers among the following compound is
If $\Delta_0< P$ then correct configuration for $d^4$ would be-
→