AP EAMCET · Chemistry · Chemical Equilibrium
(i) \(\mathrm{H}_3 \mathrm{PO}_4(a q) \rightleftharpoons \mathrm{H}^{+}(a q)+\mathrm{H}_2 \mathrm{PO}_4^{-}(a q)\)
(ii) \(\mathrm{H}_2 \mathrm{PO}_4^{-}(a q) \rightleftharpoons \mathrm{H}^{+}(a q)+\mathrm{HPO}_4^{2-}(a q)\)
(iii) \(\mathrm{HPO}_4^{2-}(a q) \rightleftharpoons \mathrm{H}^{+}(a q)+\mathrm{PO}_4^{3-}(a q)\)
The equilibrium constants for the above reactions at a certain temperature are \(K_1, K_2\) and \(K_3\) respectively. The equilibrium constant for the reaction \(\mathrm{H}_3 \mathrm{PO}_4(a q) \rightleftharpoons 3 \mathrm{H}^{+}(a q)+\mathrm{PO}_4^{3-}(a q)\) in terms of \(K_1, K_2\) and \(K_3\) is
- A \(K_1+K_2+K_3\)
- B \(\frac{K_1}{K_2+K_3}\)
- C \(\frac{K_3}{K_1 K_2}\)
- D \(K_1 K_2 K_3\)
Answer & Solution
Correct Answer
(D) \(K_1 K_2 K_3\)
Step-by-step Solution
Detailed explanation
Required relation \(\begin{aligned} & \mathrm{H}_3 \mathrm{PO}_4(a q) \rightleftharpoons 3 \mathrm{H}^{+}(a q)+\mathrm{PO}_4^{3-}(a q) \\ & K=\frac{\left[\mathrm{H}^{+}\right]^3\left[\mathrm{PO}_4^{3-}\right]}{\left[\mathrm{H}_3 \mathrm{PO}_4\right]} \end{aligned}\) For reaction…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- \(\mathrm{KMnO}_4\) oxidises \(\mathrm{S}_2 \mathrm{O}_3^{2-}\) to \(\mathrm{SO}_4^{2-}\) in medium \(x\) and \(\mathrm{NO}_2^{-}\)to \(\mathrm{NO}_3^{-}\)in medium \(y, x\) and \(y\) are respectivelyAP EAMCET 2019 Easy
- In Dumas method one gram of carbon compound gives \(50 \mathrm{~mL}\) of \(\mathrm{N}_2\) at \(300 \mathrm{~K}\) and \(740 \mathrm{~mm} \mathrm{Hg}\) pressure. If the aqueous tension at \(300 \mathrm{~K}\) is \(15 \mathrm{~mm} \mathrm{Hg}\), what is the percentage of nitrogen in it?AP EAMCET 2019 Medium
- Calculate the of solution.AP EAMCET 2021 Easy
- The total maximum number of electrons possible in \(3 \mathrm{~d}, 6 \mathrm{~d}, 5 \mathrm{~s}\) and 4 f orbitals with \(\mathrm{m}_l\) (magnetic quantum number) value -2 isAP EAMCET 2025 Medium
- \(x\) grams of water is mixed in \(69 \mathrm{~g}\) of ethanol. Mole fraction of ethanol in the resultant solution is 0.6 . What is the value of \(x\) in grams?AP EAMCET 2004 Easy
- Identify the correct statement from the following.AP EAMCET 2017 Easy
More PYQs from AP EAMCET
- \(I_n=\int \frac{t^n}{1+t^2} d t,(n=1,2,3 \ldots) \Rightarrow I_6+I_4=\)AP EAMCET 2017 Hard
- If \(y=\left(1+\alpha+\alpha^2+\ldots\right) \mathrm{e}^{\mathrm{nx}}\), where \(\alpha\) and n are constants, then the relative error in y isAP EAMCET 2024 Easy
- \(6 \mathrm{~g}\) of a non-volatile, non-electrolyte \(X\) dissolved in \(100 \mathrm{~g}\) of water freezes at \(-0.93^{\circ} \mathrm{C}\). The molar mass of \(X\) in \(\mathrm{g} \mathrm{mol}^{-1}\) is \(\left(K_f\right.\) of \(\left.\mathrm{H}_2 \mathrm{O}=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)\)AP EAMCET 2016 Medium
- \(\lim _{n \rightarrow \infty} \frac{1}{n^3} \sum_{k=1}^n k^2 x=\)AP EAMCET 2025 Medium
- A gas in a closed container undergoes the cycle \(\mathrm{ABCA}\) as shown in the figure. The net heat absorbed by the gas after it has completed 10 cycles is
AP EAMCET 2022 Medium - A gas is suddenly compressed to its initial volume. Then find the ratio of its final to initial pressure.AP EAMCET 2021 Medium