Question

# 2 C2H2 (g) + 5 O2 (g) à 4 CO2 (g) + 2 H2O (g) How...

2 C2H2 (g) + 5 O2 (g) à 4 CO2 (g) + 2 H2O (g)

How many moles of O2 are needed to react with 15.0 mL of C2H2 at 125oC and 1.25 atm? Please show work!

PV = nRT

where, P = pressure = 1.25 atm

V = volume = 15.0 mL = 0.015 L

n = number of moles

R = Gas constant

T = temperature = 125 + 273 = 398 K

1.25 * 0.015 = n * 0.0821 * 398

0.0188 = n * 32.7

n = 0.0188 / 32.7 = 5.75*10^-4 mole

Number of moles of C2H2 = 5.75*10^-4 mole

From the balanced equation we can say that

2 mole of C2H2 requires 5 mole of O2 so

5.75*10^-4 mole of C2H2 will require

= 5.75*10^-4 mole of C2H2 *(5 mole of O2 / 2 mole of C2H2)

= 14.4*10^-4 mole of O2

Therefore, the number of moles of O2 required would be 0.00144 mole

#### Earn Coins

Coins can be redeemed for fabulous gifts.

##### Need Online Homework Help?

Most questions answered within 1 hours.

##### Active Questions
• Inorganic phosphorous is a naturally occurring element in all plants and animals, with concentrations increasing progressively...
• Each time a hurricane arrives, a new home has a 0.4 probability of experiencing damage. The...
• If the spot rate was \$1.0130/C\$ and the 90-day forward rate was \$1.0240/C\$, how much more...
• Determine the pH of each of the following solutions. (a) 0.123 M propionic acid (weak acid...
• 8. A bank is not obligated to pay a check that is over ____________months old.                              &
• Gerber Product's Gerber Mixed Cereal for Baby contains, in each serving, 60 calories and 11 grams...