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Write the structures of main products when benzene diazonium chloride (C6 H5 N+2CI−)C6 H5 N2+CI- reacts with the :Cu/HBr
Concept: Methods of Preparation of Phenols
Write the structures of A, B and C in the following reactions :
\[ C_6 H_5 {NO}_2 \to^{Sn/HCI} A \to^{{NaNO}_2 /HCI}_{273 K} B \to^{H_2 O}_∆ C\]
Concept: Chemical Properties of Alcohols and Phenols
Write the structures of A, B and C in the following reactions :
Concept: Methods of Preparation of Alcohols
Draw the structures of the following :
H2S2O7
Concept: Group 16 Elements - The Oxygen Family >> Compounds of Sulphur
Account for the following :
HClO4 is a stronger acid than HClO.
Concept: Group 17 Elements - The Halogen Family >> Oxoacids of Halogens
The two O−O bond lengths in the ozone molecule are equal.
Concept: Group 16 Elements - The Oxygen Family >> Ozone
Account for the following :
H3PO2 is a stronger reducing agent than H3PO3.
Concept: Group 16 Elements - The Oxygen Family >> Oxoacids of Sulphur
Complete and balance the following equations:
S+H2SO4(conc.) →
Concept: Group 16 Elements - The Oxygen Family >> Sulphuric Acid
Complete and balance the following equation:
\[\ce{PCl3 + H2O ->}\]
Concept: Group 15 Elements - The Nitrogen Family >> Phosphorus Halides
Write balanced chemical equations involved in the following reactions:
Chlorine gas reacts with cold and dilute NaOH
Concept: Compounds of Halogens
Write balanced chemical equations involved in the following reactions:
Calcium phosphide is dissolved in water.
Concept: Group 15 Elements - The Nitrogen Family >> Oxoacids of Phosphorus
Draw structures of the following:
XeF4
Concept: Group 18 Elements - The Noble gas Family
Draw structures of the following:
`S_2O_8^{2-}`
Concept: Group 16 Elements - The Oxygen Family >> Oxoacids of Sulphur
Give reactions for the following:
O – O single bond is weaker than S – S single bond.
Concept: Group 16 Elements - The Oxygen Family
Tendency to show –3 oxidation state decrease from Nitrogn (N) to Bismuth (Bi).
Concept: Group 15 Elements - The Nitrogen Family >> Oxides of Nitrogen
Cl2 acts as a bleaching agent.
Concept: Group 17 Elements - The Halogen Family
Write one difference between transition elements and p-block elements with reference to variability of oxidation states.
Concept: Group 16 Elements - The Oxygen Family >> Oxoacids of Sulphur
Write a chemical reaction to show that the open structure of D-glucose contains the following :
Five alcohol groups
Concept: Chemical Properties of Alcohols and Phenols
Why phenol undergoes electrophilic substitution more easily than benzene?
Concept: Chemical Reaction of Ethers - Electrophilic Substitution
Give a reason for the following :
Ozone is thermodynamically less stable than oxygen.
Concept: Group 16 Elements - The Oxygen Family >> Ozone
