KCET · Chemistry · Electrochemistry
\(E_{1}, E_{2}\) and \(E_{3}\) are the emfs of the following three galvanic cells respectively.
- A \(E_{2}>E_{1}>E_{3}\)
- B \(E_{1}>E_{2}>E_{3}\)
- C \(E_{3}>E_{1}>E_{2}\)
- D \(E_{3}>E_{2}>E_{1}\)
Answer & Solution
Correct Answer
(B) \(E_{1}>E_{2}>E_{3}\)
Step-by-step Solution
Detailed explanation
\(E=E^{\circ}+\frac{0.059}{2} \log \frac{\left[\mathrm{Cu}^{2+}\right]}{\left[\mathrm{Zn}^{2+}\right]}\) \(\therefore \quad E_{1}>E_{2}>E_{3}\)
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
- \( \mathrm{H}_{2} \mathrm{O}_{2} \) isKCET 2018 Medium
- The reducing agent in the given equations
KCET 2023 Easy - Copper is extracted from Copper pyrites by heating in a Bessemer converter. The method is
based on the principle thatKCET 2015 Hard - Dialysis can be used to separateKCET 2012 Medium
- Consider the following 4 electrodes
\(\begin{aligned} & \mathrm{A}: \mathrm{Ag}^{+}(0.0001 \mathrm{M}) / \mathrm{Ag}(s) \\ & \mathrm{B}: \mathrm{Ag}^{+}(0.1 \mathrm{M}) / \mathrm{Ag}(s) \\ & \mathrm{C}: \mathrm{Ag}^{+}(0.01 \mathrm{M}) / \mathrm{Ag}(s) \\ & \mathrm{D}: \mathrm{Ag}^{+}(0.001 \mathrm{M}) / \mathrm{Ag}(s) ; E^{\circ}{ }_{\mathrm{Ag}^{+} / \mathrm{Ag}}=+0.80 \mathrm{~V}\end{aligned}\)
Then reduction potential in volts of the electrodes in the order.KCET 2023 Easy - A pair of isoelectronic species having bond order of one isKCET 2024 Medium
More PYQs from KCET
- Let \( f(x)=x-\frac{1}{x} \) then \( f^{\prime}(-1) \) isKCET 2018 Easy
- \(G=\left\{\left[\begin{array}{ll}x & x \\ x & x\end{array}\right], x\right.\) is a non-zero real number \(\}\) is a group with respect to matrix multiplication.
In this group, the inverse of \(\left[\begin{array}{ll}\frac{1}{3} & \frac{1}{3} \\ \frac{1}{3} & \frac{1}{3}\end{array}\right]\) isKCET 2011 Medium - In the circuit shown in the figure, the potential difference across the \(4 \mu\text{F}\) capacitor is
KCET 2026 Medium - Constant DC voltage is required from a variable AC voltage. Which of the following is correct
order of operation?KCET 2016 Medium - In series \(L C R\) circuit at resonance, the phase difference between voltage and current isKCET 2023 Easy
- Two bulbs rated \(25 \mathrm{W}-220 \mathrm{V}\) and \(100 \mathrm{W}-220 \mathrm{V}\) are connected in series to a 440 V supply. The,KCET 2007 Medium