Chemistry Test ...

Some standard reduction potentials are given below:

Which of the following statements is correct under standard conditions?

The standard redox potentials (E^o) of the following reactions are as follows.

!. \(\mathrm{MnO}_{4}^{-}+8 \mathrm{H}^{+}+5 \mathrm{e}^{-} \rightarrow \mathrm{Mn}^{2+}+4 \mathrm{H}_{2} \mathrm{O}: \mathrm{E}^{8}=1.51 \mathrm{V}\)

11. \(\operatorname{Sn}^{2}+\rightarrow \operatorname{Sn}^{4+}+2 e^{-} ; E^{8}=-0.15 V\)

III. \(\mathrm{Cr}_{2} \mathrm{O}_{2}^{2-}+14 \mathrm{H}^{+}+6 \mathrm{e}^{-} \rightarrow 2 \mathrm{Cr}^{3+}+7 \mathrm{H}_{2} \mathrm{O} ; \mathrm{E}^{8}=1.33 \mathrm{V}\)

\(\mathrm{IV} \cdot \mathrm{Ce}^{3+} \rightarrow \mathrm{Ce}^{4+}+\mathrm{e}^{-} \quad \quad \mathbb{E}^{8}=-1.61 \mathrm{V}\)

In which of the following options is the oxidising power of the various ions wrongly related?

Directions: The following question has four choices out of which ONLY ONE is correct.

The reduction electrode potential (E) of 0.1 M solution of M⁺ ions (E^o_RP = – 2.36V) is

Directions: The following question has four choices out of which ONLY ONE is correct.

Standard electrode potential of cell H₂ | H⁺ || Ag⁺ I Ag is
(Given = E^o Ag⁺/Ag = 0.80 V)

Directions: The following question has four choices, out of which ONLY ONE is correct.

Consider the following half reactions:

\(\mathrm{Zn}^{2+}+2 \mathrm{e}^{*} \rightarrow \mathrm{Zn}(\mathrm{s}) ; \mathrm{E}^{8}=-0.76 \mathrm{V}\)

\(\mathrm{Cu}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Cu}(\mathrm{s}) ; \mathrm{E}^{8}=-0.34 \mathrm{V}\)

Which of the following reactions is spontaneous?

If the initial concentration of a reactant of a zero order reaction is reduced by half, the time for half decomposition

Directions: The following question has four choices out of which ONLY ONEis correct.

For the decomposition of \(\mathrm{N}_{2} \mathrm{O}_{5}\), the plot of the logarithm (to the base 10 ) of the pressure of \(\mathrm{N}_{2} \mathrm{O}_{5}\) in torr (log \(\mathrm{P}_{\mathrm{N}_{2} 0_{0}}\) ) against time (t) gives a straight line with slope \(-4.39 \times 10^{-3} \mathrm{min}^{-1}\) and intercept 0.27

Concluding from the given data, which of the following statements is incorrect?

Directions: The following question has four choices, out of which ONLY ONE is correct.

The decomposition of SO₂Cl₂ to SO₂ and Cl₂ is a first order reaction. When 0.10 mol of SO₂Cl₂ (g) is heated at 600 K in a 1.0 L vessel, the total pressure changes from 4.91 atm to 9.50 atm in 16 hours. Which of the following statements is correct?

Li nucleus has three protons and four neutrons. Mass of lithium nucleus is 7.016005 amu. Mass of proton is 1.007277 amu and mass of neutron is 1.008665 amu. Mass defect for lithium nucleus in amu is