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Given the equation:2C2H2 (g) + 5O2 (g) → 4 CO2 (g) + 2H2O(g)How many moles of oxygen are required to react completely with 1.0mole of C2 H2 ?(1) 2.5 (3) 5.0(2) 2.0 (4) 10

Sagot :

Answer : The correct option is, (1) 2.5 moles

Solution : given,

Moles of [tex]C_2H_2[/tex] = 1 mole

The given balanced reaction is,

[tex]2C_2H_2(g)+5O_2(g)\rightarrow 4CO_2(g)+2H_2O(g)[/tex]

From the balanced reaction, we conclude that

As, 2 moles of [tex]C_2H_2[/tex] react with 5 moles of [tex]O_2[/tex]

So, 1 mole of [tex]C_2H_2[/tex] react with [tex]\frac{5}{2}=2.5[/tex] moles of [tex]O_2[/tex]

Therefore, the number of moles of oxygen required is, 2.5 moles.