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Write resonating structures of ozone.
Concept: Factors Influencing Rate of a Reaction
The decomposition of N2O5(g) at 320K according to the following equation follows first order reaction:
`N_2O_(5(g))->2NO_(2(g))+1/2O_(2(g))`
The initial concentration of N2O5(g) is 1.24 x 10-2 mol. L-1 and after 60 minutes 0.20x10-2 molL-1. Calculate the rate constant of the reaction at 320K.
Concept: Factors Influencing Rate of a Reaction
Write cathode and anode reaction in a fuel cell.
Concept: Electrochemical Cells
The half-life period of zero order reaction A → product is given by
(a) `([A]_0)/k`
(b) `0.693/k`
(c) `[A]_0/(2k)`
(d) `(2[A]_0)/k`
Concept: Half Life Period of a Reaction
How many faradays of electricity are required to produce 6 g of Mg from MgCl2?
Concept: Electrochemical Cells
The half life period of a first order reaction is 6. 0 h . Calculate the rate constant
Concept: Half Life Period of a Reaction
The molar conductivity of 0.05 M BaCl2 solution at 25° C is 223Ω-1 cm2 mol-1. What is its conductivity?
Concept: Electrical Conductance of Solution
In a first-order reaction A → product, 80% of the given sample of compound decomposes in 40 min. What is the half-life period of the reaction?
Concept: Half Life Period of a Reaction
Choose the most correct option.
Which of the following is not correct?
Concept: Electrochemistry
Answer the following in one or two sentences.
Write any two functions of salt bridge.
Concept: Galvanic or Voltaic Cell
Answer the following in one or two sentences.
What is standard cell potential for the reaction
\[\ce{3Ni_{(s)} + 2Al^{3+} (1M) → 3Ni^{2+} (1M) + 2Al(s)}\], if `E_"Ni"^circ` = –0.25 V and `"E"_("Al")^circ` = –1.66 V?
Concept: Electrode Potential and Cell Potential
Answer the following in one or two sentences.
Write Nernst equation. What part of it represents the correction factor for nonstandard state conditions?
Concept: Electrode Potential and Cell Potential
Write electrode reactions for the electrolysis of aqueous NaCl.
Concept: Electrolytic Cell
Answer the following in brief.
Construct a galvanic cell from the electrodes Co3+ | Co and Mn2+/Mn. \[\ce{E{^{\circ}_{Co}}}\] = 1.82 V, \[\ce{E{^{\circ}_{Mn}}}\] = –1.18 V. Calculate \[\ce{E{^{\circ}_{cell}}}\]
Concept: Electrode Potential and Cell Potential
Derive the relationship between standard cell potential and equilibrium constant of cell reaction.
Concept: Thermodynamics of Galvanic Cells
It is impossible to measure the potential of a single electrode. Comment.
Concept: Reference Electrodes
What are anode and cathode for Leclanche’ dry cell?
Concept: Galvanic Cells Useful in Day-to-day Life
The molar conductivity and conductivity of AgNO3 solution is 121.4 Ω–1 cm2 mol–1 and 2.428 × 10–3 Ω–1 cm–1 at 25 °C. What is molar concentration of AgNO3 solution?
Concept: Electrical Conductance of Solution
What are the functions of a salt bridge in a galvanic cell?
Concept: Galvanic or Voltaic Cell
