A sample of 4.5mg of an unknown monohydric alcohol, R-OH was added to methylmagnesium iodide. A gas is evolved and is collected and its volume measured to be 3.1 mL. The molecular weight of the unknown alcohol is ____________ g/mol.
<p> (Calculation is done considering STP condition)</p><p><math><mrow><mi>R</mi><mi>O</mi><mi>H</mi><mo>+</mo><mi>C</mi><msub><mrow><mi>H</mi></mrow><mrow><mn>3</mn></mrow></msub><mi>M</mi><mi>g</mi><mi>l</mi><mo>→</mo><mi>C</mi><msub><mrow><mi>H</mi></mrow><mrow><mn>4</mn></mrow></msub><mo>+</mo><mi>R</mi><mi>O</mi><mi>M</mi><mi>g</mi><mi>l</mi></mrow></math></p><p>No. of moles ROH = no. of moles of CH4</p><p><math><mrow><mfrac><mrow><mn>4</mn><mo>.</mo><mn>5</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow><mrow><mi>M</mi></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>3</mn><mn>1</mn></mrow><mrow><mn>2</mn><mn>2</mn><mn>4</mn><mn>0</mn><mn>0</mn></mrow></mfrac><mo>⇒</mo><mn>3</mn><mn>2</mn><mo>.</mo><mn>5</mn><mn>2</mn><mo>≈</mo><mn>3</mn><mn>3</mn><mi>g</mi><mi>m</mi><mo>/</mo><mi>m</mi><mi>o</mi><mi>l</mi><mi>e</mi></mrow></math></p>
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