HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions

Define the degree of dissociation.

Answer the following :

Derive the relationship between the degree of dissociation and dissociation constant in weak electrolytes.

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The order of the reaction for which the units of the rate constant are mol dm^-3 s^-1 is _______.

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The rate constant for the reaction \[\ce{2N2O5_{(g)} -> 2N2O4_{(g)} + O2_{(g)}}\] is `4.98 xx 10^-4 "s"^-1`. The order of reaction is _____________.

The time required for 90% completion of a certain first-order reaction is t. The time required for 99.9% completion will be _________.

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Slope of the graph ln[A]_t versus t for first-order reaction is _________.

What is the half life of a first order reaction if time required to decrease concentration of reactant from 0.8 M to 0.2 M is 12 h?

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The reaction, \[\ce{3ClO- -> ClO^-3 + 2Cl-}\] occurs in two steps, 

(i) \[\ce{2ClO- -> ClO^-2}\]

(ii) \[\ce{ClO^-2 + ClO- -> ClO^-_3 + Cl-}\] 

The reaction intermediate is _______.

The elementary reaction \[\ce{O3_{(g)} + O_{(g)} -> 2O2_{(g)}}\] is ______.

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Rate law for the reaction, \[\ce{2NO + Cl2 -> 2NOCl}\] is rate = k[NO₂]²[Cl₂]. Thus of k would increase with _____________.

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For an endothermic reaction, X ⇌ Y. If E_f is the activation energy of the forward reaction and E_r that for the reverse reaction, which of the following is correct?

Answer the following in one or two sentences.

For the reaction, \[\ce{CH3Br_{(aq)} + OH^{-}_{(aq)} -> CH3OH^{\ominus}_{(aq)} + Br^{\ominus}_{(aq)}}\], rate law is rate = \[\ce{k[CH3Br][OH^\ominus]}\]

How does reaction rate changes if \[\ce{[OH^\ominus]}\] is decreased by a factor of 5?

Answer the following in brief.

For the reaction 2A + B → products, find the rate law from the following data.

Answer in brief.

What are bidentate ligands? Give one example.

Answer in brief.

What are the coordination number and oxidation state of the metal ion in the complex [Pt(NH₃)Cl₅]^-?

Answer in brief.

What is the difference between a double salt and a complex? Give an example.

Write IUPAC name of the following compound.

\[\begin{array}{cc}
\ce{CH3 - CH = C - CH - Br}\\
\phantom{......}|\phantom{....}|\\
\ce{\phantom{......}H3C} \ce{\phantom{...}CH3}
\end{array}\]

Write IUPAC name of the following compound.

\[\begin{array}{cc}
\ce{CH3 - CH - CH - CH2 - CH3}\\
|\phantom{......}|\phantom{.........}\\
\ce{Cl} \ce{\phantom{....}CH3\phantom{.......}}
\end{array}\]

Write IUPAC name of the following compound.

Write the IUPAC name of the following compound.