Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon dioxide and hydrogen react to form methanol and water: CO,(9) + 3 H2(g) → CH;OH(1) + H,0(1) AH=-131. kJ In the second step, methanol reacts to form dimethyl ether and water: 2 CH3OH(1) CH,OCH3(9) + H,0(1) AH=8. kJ Calculate the net change in enthalpy for the formation of one mole of dimethyl ether from carbon dioxide and hydrogen from these reactions. Round your answer to the nearest kJ.

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Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon dioxide and hydrogen react to form methanol and water:
CO2(9) + 3 H2(g) → CH3OH(1) + H20(1)
AH=-131. kJ
In the second step, methanol reacts to form dimethyl ether and water:
2 CH,OH(1)
CH;OCH3(9) + H,O(1)
ΔΗ-8. k J
Calculate the net change in enthalpy for the formation of one mole of dimethyl ether from carbon dioxide and hydrogen from these reactions.
Round your answer to the nearest kJ.
|kJ
Transcribed Image Text:Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon dioxide and hydrogen react to form methanol and water: CO2(9) + 3 H2(g) → CH3OH(1) + H20(1) AH=-131. kJ In the second step, methanol reacts to form dimethyl ether and water: 2 CH,OH(1) CH;OCH3(9) + H,O(1) ΔΗ-8. k J Calculate the net change in enthalpy for the formation of one mole of dimethyl ether from carbon dioxide and hydrogen from these reactions. Round your answer to the nearest kJ. |kJ
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