X g of nitrobenzene on nitration gave 4.2 g of m-dinitrobenzene.

X = g. (nearest integer)

[Given: molar mass (in g mol) C: 12, H: 1, O: 16, N: 14]

Question

X g of nitrobenzene on nitration gave 4.2 g of m-dinitrobenzene.

X =  g. (nearest integer)

[Given: molar mass (in g mol) C: 12, H: 1, O: 16, N: 14]

Canvas Classes · Accepted Answer

Step 1 — Write the reaction

(m-dinitrobenzene)

Nitrobenzene () is nitrated to give m-dinitrobenzene ().

Step 2 — Calculate molar masses

Molar mass of nitrobenzene ()  g/mol

Molar mass of m-dinitrobenzene ()  g/mol

Step 3 — Find moles of m-dinitrobenzene formed

mol

Step 4 — Find moles of nitrobenzene required

From stoichiometry: 1 mol nitrobenzene gives 1 mol m-dinitrobenzene

mol

Step 5 — Find mass of nitrobenzene (X)

g

Nearest integer:  g

Key Points to Remember:
- Nitrobenzene

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