Limiting+Reagent

Limiting Reagent

Limiting reagentis the reactant that is used up first in a chemical reaction. This reagent limits the amount of overall product formed. on the other hand, an excess reagemt is the reactant that is not used up during a chemical reaction.

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Practice Problems

The equation for the complete combustion of ethene (C2H4) is C2H4 (g) + 3O2(g) ---à 2CO2(g) + 2H2O(g). If 2.70 mol C2H4 is reacted with 6.30 mol <span style="font-size: 11pt; line-height: 115%; font-family: 'Calibri','sans-serif'; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; msoasciithemefont: minor-latin; msohansithemefont: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA; msofareastfontfamily: Calibri; msofareastthemefont: minor-latin; msobidifontfamily: 'Times New Roman'; msobidithemefont: minor-bidi; msoansilanguage: EN-US; msofareastlanguage: EN-US; msobidilanguage: AR-SA;">O2. Identify the limiting reagent. The equation below shows the incomplete combustion of ethene C2H4 (g) + 3O2(g) --- à 2CO2(g) + 2H2O(g). If 2.70 mol C2H4 is reacted with 6.30 mol <span style="font-size: 11pt; line-height: 115%; font-family: 'Calibri','sans-serif'; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; msoasciithemefont: minor-latin; msohansithemefont: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA; msofareastfontfamily: Calibri; msofareastthemefont: minor-latin; msobidifontfamily: 'Times New Roman'; msobidithemefont: minor-bidi; msoansilanguage: EN-US; msofareastlanguage: EN-US; msobidilanguage: AR-SA;">O2, a. identify the limiting reagent b. calculate the moles of water used.