The reactant which is entirely consumed in reaction is known as limiting reagent. In the reaction 2A + 4B \(\Rightarrow\) 3C + 4D, when 5 moles of A react with 6 moles of B, then calculate the amount of C formed?

2

(a)

Yellow light emitted from a sodium lamp has a wavelength (λ) of 580 nm. Calculate the frequency (ν) and wavenumber (\(\bar { v } \)) of the yellow light.

2

(a)

The electronic configuration of valence shell of Cu is \(3d^{10}4s^{1} and\ 3d^{9}4s^{2}\) How is this configuration explained?

2

(a)

Describe the change in hybridisation (if any) of the Al atom in the following reaction.
\({ AlCl }_{ 3 }+{ Cl }^{ - }\longrightarrow { AlCl }_{ 4 }^{ - }\)

2

(a)

Group the given molecules as linear and non-linear molecules.

2

(a)

Name the energy which arises due to motion of atoms or molecules in a body. How is this energy affected when the temperature is increased?

2

(a)

The value of \({ \Delta }_{ f }{ H }^{ \Theta }\) for NH₃ is -91.8 kJ mol^-1. Calculate enthalpy change for the following reaction.
\(2{ NH }_{ 3 } \ (g)\longrightarrow { N }_{ 2 }(g) \ + \ { 3H }_{ 2 }(g)\)

2

(a)

Calculate the oxidation number of phosphorus in the following species.
\({ HPO }_{ 3 }^{ 2- }\)

2

(a)

What do you mean by significant figures?

2

(a)

Draw the resonance structures for the following compounds. Show the electron shift using curved-arrow notation.CH₃CH = CHCH₂

2

(a)