# Problem: You may want to reference (Pages 172 - 176)Section 5.3 while completing this problem.Consider the following reaction: 2 CH3OH(g)  →  2CH4(g) + O2 (g), ΔH = +252.8 kJHow many kilojoules of heat are released when 38.5 g of CH4(g) reacts completely with O2(g) to form CH3OH(g) at constant pressure?

###### FREE Expert Solution

We are asked how many kilojoules of heat are released when 38.5 g of CH4(g) reacts completely with O2(g) to form CH3OH(g) at constant pressure?

2 CH3OH(g)  →  2 CH4(g) + O2 (g), ΔH = +252.8 kJ

Molar Mass CH4 = 16.05 g/mol

The heat is released so the ΔH is negative.

94% (387 ratings) ###### Problem Details

You may want to reference (Pages 172 - 176)Section 5.3 while completing this problem.

Consider the following reaction: 2 CH3OH(g)  →  2CH4(g) + O2 (g), ΔH = +252.8 kJ

How many kilojoules of heat are released when 38.5 g of CH4(g) reacts completely with O2(g) to form CH3OH(g) at constant pressure?

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