Question

Consider the combustion reaction for octane (CH), which is a primary component of gasoline. 2C,H,8 + 2502 16CO2 + 18 H,0 How many moles of Co, are emitted into the atmosphere when 25.6 g C, H,8 is burned?

Answer 1

The giver reaction equation is - 20 tot 2sa → 16co + 18t₂0 According to this balanced chemical equation 2 moles of octane ( 8) react with 25 moles of oxygen (0) to produce 16 moles of co and 18 moles So we can say that 2 moles of octane that on complete reaction can produce 16 moles carbon dioxide (co

- To calculate the number of moles of ca emitted by burning of 25.6g of Cattige we need to calculate the number K - molesi 25:6g of Cathy The formula to calculate number of moles in Number of moles - Mass Molar Mass Mass of Cathg = 25.6g Molar Mass of this = 8 (Molar mass of c) + 18 ( Molar mass of t) - 8. (12 g/mol) & is (g/mol) = abg/ml + 18 g/mol = ung/mol using we get нь бол болу 25:44 - lug/mol 0.224 moles =

Now, 2 moles of Gt produce co = 16 moles of this will produce co = 16 = 8 moles -------- Thusy --- 0.224 moles (25.6g) will produce co = 8x0.224 moles = 1.79 moles 8 Thus 1.79 moles of co are emitted in the atmosphere when 25.6g of this is burned