# chem

posted by .

how do you write the equilibrium expression for: C3H8 + SO2-><- 3CO2 + 4H2O?

• chem -

The equilibrium expression is the product of the products divided by the product of the reactants each raised to a power indicated by the coefficient in the balanced chemical equation. HOWEVER, you must have mixed up two equations because there is no way this will work. I might buy it if the S of the SO2 was not there. I would be willing to bet money that you typed an S (for SO2) but you intended to type 5O2. Please clarify.

• chem -

i don't know what it is but that's the equation on my hw

• chem -

im sorry your right it is a 5 :)

• chem -

how do you write the equilibrium expression for:

C3H8 + 5O2-><- 3CO2 + 4H2O

Keq = (CO2)3(H2O)4/(C3H8)(O2)2.

I am assuming, since this is a combustion reaction, that the H2O is present as a gas. If it isn't, sometimes the water doesn't enter into the equilibrium OR it is essentially constant, in which case it is often omitted from the expression.

• chem -

Madison--I made a typo, also. The power of O2 should be to the fifth and not squared. Each concentration is raised to the power of the coefficient in the equation. The coefficient for O2 is 5, therefore (O2)^5. Sorry bout that.

• chem -

thank you

• chem -

See my last response just above your last one. It points out a typo I made.

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### Chemistry

For the burning of propane C3H8(g)+SO2(g)<==>3CO2(g)+4H2O(g) which of the following is true at and temperature: i./\G<0 ii./\S>0 iii./\H<0 */\ is a triangle*
2. ### Chemistry

C3H8 + 5O2 3CO2 + 4H2O How many grams of oxygen are required to burn 7.0 g of C3H8?
3. ### chemistry

For the reaction C3H8+5CO2=3CO2+4H2O How many moles of c3h8 are needed to make 3.6 grams of c3h8?
4. ### chem

Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?
5. ### Chemistry

If you decrease the pressure on the equilibrium mixture represented below, which direction would you expect the equilibrium to shift?
6. ### AP Chemistry

what is the maximum amount of CO2 which could be formed from 13.18 g of C3H8 and 9.15 g of O2?
7. ### chemistry question

What mass of propane (C3H8) is needed to produce 346 g carbon dioxide in the following reaction?
8. ### Chemistry

Oops I posted the right question but wrong answer options... What mass of propane (C3H8) is needed to produce 346g carbon dioxide in the following reaction?
9. ### chemistry

What mass of propane (C3H8) is needed to produce 346g carbon dioxide in the following reaction?
10. ### Chem

The combustion of propane (C3H8) produces CO2 and H2O: C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g) The reaction of 3.5 mol of O2 will produce ________ mol of H2O.

More Similar Questions