COMEDK · Chemistry · 8. Ionic Equilibrium
Hydroxyl ion concentration of \(1 \mathrm{M} \mathrm{HCl}\) is
- A \(1 \times 10^{-14} \mathrm{~mol} \mathrm{dm}^{-3} \quad\)
- B \(1 \times 10^{-1} \mathrm{~mol} \mathrm{dm}^{-3}\)
- C \(1 \times 10^{-13} \mathrm{~mol} \mathrm{dm}^{-3} \quad\)
- D \(1 \times 10^{1} \mathrm{~mol} \mathrm{dm}^{-3}\)
Answer & Solution
Correct Answer
(A) \(1 \times 10^{-14} \mathrm{~mol} \mathrm{dm}^{-3} \quad\)
Step-by-step Solution
Detailed explanation
For \(1 \mathrm{M} \mathrm{HCl}\), \[ \begin{aligned} {\left[\mathrm{H}^{+}\right]=1 } &=10^{0} \\ {\left[\mathrm{H}^{+}\right]\left[\mathrm{OH}^{-}\right] } &=10^{-14} \\ {\left[\mathrm{OH}^{-}\right] } &=10^{-14} \mathrm{~mol} \mathrm{dm}{ }^{-3} . \end{aligned} \]
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
- What is the final product formed when Toluene undergoes the following series of reactions?
COMEDK 2024 Medium - The Enthalpy of combustion of 1.0 mole of a reactive metal X at \(27^{\circ} \mathrm{C}\) and 1.0 bar pressure to form a solid oxide (XO) is \(-601.83 \mathrm{~kJ} / \mathrm{mol}\). The Internal energy change for this reaction is ______ kJ .
\(\left(\mathrm{R}=8.314 \mathrm{j} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right)\)COMEDK 2025 Medium - An aqueous solution which contains \(42 \%\) by weight ( \(\mathrm{w} / \mathrm{W}\) ) of a volatile liquid " A " of molar mass of \(140 \mathrm{~g} / \mathrm{mol}\), has a vapour pressure of 2141.4 mm of Hg at \(37^{\circ} \mathrm{C}\). What is the vapour pressure of the pure liquid "A"? Vapour pressure of water at \(37^{\circ} \mathrm{C}\) is 2019.1 mm .COMEDK 2025 Medium
- In the following sets of ions, which one is not isoelectronic with the rest of the species?
\[
\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}, \mathrm{Mg}^{2+}, \mathrm{Al}^{3+}, \mathrm{Ne}
\]COMEDK 2014 Easy - Choose the incorrect statement from the following:
A. Isoelectronic molecules/ions have the same bond order.
B. Dipole moment of \(\mathrm{NH}_3\) is greater than that of \(\mathrm{NF}_3\).
C. The Carbon in Methyl Carbocation is \(\mathrm{sp}^3\) hybridised.
D. The stability of an ionic compound is measured in terms of its lattice enthalpy and not simply based on attaining Octet configuration.COMEDK 2024 Medium - \(200 \mathrm{ml}\) of an aqueous solution contains \(3.6 \mathrm{~g}\) of Glucose and \(1.2 \mathrm{~g}\) of Urea maintained at a temperature equal to \(27^{\circ} \mathrm{C}\). What is the Osmotic pressure of the solution in atmosphere units?
\(\mathrm{R}=0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~K}{ }^{-1} \mathrm{~mol}^{-1}\) : Molecular Formula: Glucose is \(\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6\) and of Urea is \(\mathrm{NH}_2 \mathrm{CONH}_2\)COMEDK 2024 Medium
More PYQs from COMEDK
- A mathematical model written to construct a maximum area rectangle out of a thread of length \(10 \mathrm{~cm}\) is given by maximise \(l b\).
Such that \(2(l+b)=10, l, b>0\), where \(l\) and \(b\) are the length and breadth of the rectangle.
This is not a linear programming problem becauseCOMEDK 2014 Medium - Ethanol, when warmed with iodine and sodium carbonate gives a yellow coloured crystalline solid, which is used in preparation of antiseptic ointments. The yellow coloured crystalline substance isCOMEDK 2015 Hard
- In a set of reactions, bromoethane yielded a final product 'S'.
The compound 'S' should beCOMEDK 2024 Medium - The probability that a randomly chosen number from one to twelve is a divisor of twelve isCOMEDK 2024 Easy
- Conductivity of a solution is not affected byCOMEDK 2019 Medium
- A repeater in TV transmission isCOMEDK 2014 Easy