Methylation of 10g of benzene give 9.2g of toluene. Calculate the percentage yield of toluene_________. (Nearest initeger)

Theoretically; 1 mol benzene gives 1 mol toluene

Moles of benzene = $\frac{10}{78}mol$

Moles of toluene (Theoretical) = $\frac{10}{78}mol$

Mole of toluene (observed) = $\frac{9.2}{92}=0.1mol$

% yield = $\frac{0.1}{\frac{10}{78}}\times 100$

= 78%

<div><div><picture><source srcset="" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1754653822php6377LS.jpeg" alt="" width="508" height="131" loading="lazy"></picture></div></div><p>Theoretically; 1 mol benzene gives 1 mol toluene</p><p>Moles of benzene = <span contenteditable="false"> <math> <mrow> <mfrac> <mrow> <mn>1</mn> <mn>0</mn> </mrow> <mrow> <mn>7</mn> <mn>8</mn> </mrow> </mfrac> <mi>m</mi> <mi>o</mi> <mi>l</mi> </mrow> </math> </span>&lt;!- [if gte mso 9]>&lt;xml&gt; <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1025" DrawAspect="Content" ObjectID="_1816179407"> </o:OLEObject>&lt;/xml&gt;&lt;! [endif]-&gt;</p><p>Moles of toluene (Theoretical) = <span contenteditable="false"> <math> <mrow> <mfrac> <mrow> <mn>1</mn> <mn>0</mn> </mrow> <mrow> <mn>7</mn> <mn>8</mn> </mrow> </mfrac> <mi>m</mi> <mi>o</mi> <mi>l</mi> </mrow> </math> </span>&lt;!- [if gte mso 9]>&lt;xml&gt; <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1026" DrawAspect="Content" ObjectID="_1816179408"> </o:OLEObject>&lt;/xml&gt;&lt;! [endif]-&gt;</p><p>Mole of toluene (observed) = <span contenteditable="false"> <math> <mrow> <mfrac> <mrow> <mn>9</mn> <mo>.</mo> <mn>2</mn> </mrow> <mrow> <mn>9</mn> <mn>2</mn> </mrow> </mfrac> <mo>=</mo> <mn>0</mn> <mo>.</mo> <mn>1</mn> <mi>m</mi> <mi>o</mi> <mi>l</mi> </mrow> </math> </span>&lt;!- [if gte mso 9]>&lt;xml&gt; <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1027" DrawAspect="Content" ObjectID="_1816179409"> </o:OLEObject>&lt;/xml&gt;&lt;! [endif]-&gt;</p><p>% yield = <span contenteditable="false"> <math> <mrow> <mfrac> <mrow> <mn>0</mn> <mo>.</mo> <mn>1</mn> </mrow> <mrow> <mfrac> <mrow> <mn>1</mn> <mn>0</mn> </mrow> <mrow> <mn>7</mn> <mn>8</mn> </mrow> </mfrac> </mrow> </mfrac> <mo>×</mo> <mn>1</mn> <mn>0</mn> <mn>0</mn> </mrow> </math> </span>&lt;!- [if gte mso 9]>&lt;xml&gt; <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1028" DrawAspect="Content" ObjectID="_1816179410"> </o:OLEObject>&lt;/xml&gt;&lt;! [endif]-&gt;</p><p>= 78%</p>

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