Observe the following stoichiometric equation
P4 + 3 OH- + 3 H2O → PH3 + 3 OH-.
What is the conjugate acid of OH- ?
Observe the following stoichiometric equation
P4 + 3 OH- + 3 H2O → PH3 + 3 OH-.
What is the conjugate acid of OH- ?
Show Hint
- Phosphorous acid
- Hypophosphorous acid
- Phosphoric acid
- Pyrophosphoric acid
The Correct Option is B
Solution and Explanation
The given equation involves the reaction of phosphorous with hydroxide ions and water to form phosphine and hydroxide ions.
Step 1: The conjugate acid of a base is formed when the base accepts a proton (H\(^+\)).
Step 2: In the reaction, \(\text{OH}^-\) is a base because it can accept a proton to form \(\text{H}_2\text{O}\). Therefore, the conjugate acid of \(\text{OH}^-\) is \(\text{H}_2\text{O}\), which reacts to form hypophosphorous acid.
Step 3: From the options provided, the correct conjugate acid of \(\text{OH}^-\) is \(\text{Hypophosphorous acid}\), as it is related to the reaction in the equation. Thus, the correct answer is option (2), Hypophosphorous acid.
Top Questions on Chemical Kinetics
- The rate of a reaction doubles when the temperature is increased by 10°C. What is the approximate value of the activation energy?
- BITSAT - 2025
- Chemistry
- Chemical Kinetics
- Assertion (A): Molecularity of reaction is determined experimentally. Reason (R): Molecularity is applicable only for an elementary reaction and not for a complex reaction.
- CBSE CLASS XII - 2025
- Chemistry
- Chemical Kinetics
- In the Arrhenius equation \( k = Ae^{-E_a/RT} \), ‘A’ represents:
- CBSE CLASS XII - 2025
- Chemistry
- Chemical Kinetics
- The value of rate constant for a pseudo first order reaction:
- CBSE CLASS XII - 2025
- Chemistry
- Chemical Kinetics
The rate of a reaction:
A + B −→ product
is given below as a function of different initial concentrations of A and B.Experiment \([A]\) (mol L\(^{-1}\)) \([B]\) (mol L\(^{-1}\)) Initial Rate (mol L\(^{-1}\) min\(^{-1}\)) 1 0.01 0.01 \(5 \times 10^{-3}\) 2 0.02 0.01 \(1 \times 10^{-2}\) 3 0.01 0.02 \(5 \times 10^{-3}\) - CBSE CLASS XII - 2025
- Chemistry
- Chemical Kinetics
Questions Asked in AP EAMCET exam
- A particle of mass 2 g and charge 6 $\mu$C is accelerated from rest through a potential difference of 60 V. The speed acquired by the particle is:
- AP EAMCET - 2024
- Speed and velocity
- P, Q, and R try to hit the same target one after another. Their probabilities of hitting are \( \frac{2}{3}, \frac{3}{5}, \frac{5}{7} \) respectively. Find the probability that the target is hit by P or Q but not by R.
- AP EAMCET - 2024
- Probability
- In a meter bridge experiment, a resistance of 9 Ω is connected in the left gap and an unknown resistance greater than 9 Ω is connected in the right gap. If the resistance in the gaps are interchanged, the balancing point shifts by 10 cm. The unknown resistance is:
- AP EAMCET - 2024
- Wheatstone Bridge
- The angle made by the resultant vector of two vectors \( 2\hat{i} + 3\hat{j} + 4\hat{k} \) and \( 2\hat{i} - 7\hat{j} - 4\hat{k} \) with the x-axis is:
- If the longest wavelength of the spectral line of the Paschen series of \( \text{Li}^{2+} \) ion spectrum is \( x \) Å, then the longest wavelength (in Å) of the Lyman series of the hydrogen spectrum is:
- AP EAMCET - 2024
- Atomic Spectra