Science (English Medium) Class 11 - CBSE Question Bank Solutions for Chemistry

One of the reactions that takes place in producing steel from iron ore is the reduction of iron (II) oxide by carbon monoxide to give iron metal and CO₂.

\[\ce{FeO (s) + CO (g) ↔ Fe (s) + CO2 (g)}\]; K_p= 0.265 at 1050 K.

What are the equilibrium partial pressures of CO and CO₂ at 1050 K if the initial partial pressures are: p_CO = 1.4 atm and `"p"_("co"_2)`= 0.80 atm?

What are electrophiles and nucleophiles? Explain with examples.

Identify the reagents shown in bold in the following equation as nucleophiles or electrophiles:

\[\ce{C6H6 + \underline{\text{CH}_3\overset{+}{\ce{C}}{\ce{O}}} -> C6H5COCH3}\]

What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?

\[\begin{array}{cc}
\ce{D}\phantom{......}\ce{H}\\
\backslash\phantom{......}/\\
\ce{C = C}\\
\phantom{...}/\phantom{......}\backslash\phantom{...}\\\ce{H}\phantom{.......}\ce{D}
\end{array}\]

\[\begin{array}{cc}
\ce{D}\phantom{......}\ce{D}\\
\backslash\phantom{......}/\\
\ce{C = C}\\
\phantom{...}/\phantom{......}\backslash\phantom{...}\\\ce{H}\phantom{.......}\ce{H}\end{array}\]

The reaction: \[\ce{CH_3CH_2I + KOH_{(aq)} -> CH_3CH_2OH + KI}\] is classified as ______.

What do you understand by the term ’auto-protolysis’ of water? What is its significance?

Consider the reaction of water with F₂ and suggest, in terms of oxidation and reduction, which species are oxidized/reduced.

Complete the following chemical reaction.

\[\ce{PbS_{(s)} + H_2O_{2(aq)} ->}\] ______ 

Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.

Complete the following chemical reaction.

\[\ce{MnO^-_{4(aq)} + H_2O_{(g)} ->}\]

Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.

Complete the following chemical reaction.

\[\ce{CaO_{(s)} + H_2O_{(g)} ->}\]?

Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.

Complete the following chemical reaction.

\[\ce{AlCl_{3(g)} + H_2O_{(l)} ->}\] ?

Complete the following chemical reaction.

\[\ce{Ca_3N_{2(s)} + H_2O_{(l)} ->}\] ?

Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.

Write chemical reactions to show the amphoteric nature of water.

What is the difference between the terms ‘hydrolysis’ and ‘hydration’?

Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (i) normal water (ii) acidified water, and (iii) alkaline water? Write equations wherever necessary.

What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?

What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?

\[\begin{array}{cc}\ce{^+OH}\\||\\
\ce{H - C - OH}\end{array}\]

\[\begin{array}{cc}\ce{OH}\phantom{.}\\|\phantom{...}\\
\ce{H - C^+ - OH}\end{array}\]

What is meant by the term bond order?

Identify the reagents shown in bold in the following equation as nucleophiles or electrophiles:

\[\ce{CH3COOH + \underline{\ce{H}\overset{-}{\ce{O}}} -> CH3COO^- + H2O }\]

Identify the reagents shown in bold in the following equation as nucleophiles or electrophiles:

\[\ce{CH3COCH3 + \underline{\overset{-}{\ce{C}}\ce{N}} -> (CH3)2C(CN)(OH)}\]