Question

In the reaction shown below, 100 grams of H2CO3 decomposes to form 71 grams of CO2. Why is the amount of CO2 produced not equal to 100g?

H2CO3 H2O + CO2

Answer 1

Because the other 29 grams would be allotted to H2O.

Answer 2

That may not be the case though.

Answer 3

But here, that is the case.

Answer 4

Because some mass is converted to energy and then given off as heat in the reaction, the mass of the products will be less than the expected amount.

The chemical equation shown is not balanced. The amount of CO2 will equal 100g if the equation is balanced.

The chemical equation is balanced, but the amounts are in grams, not moles. The grams need to be converted to moles.

Decomposition reactions are unstable and almost immediately decay into other byproducts, making it difficult to measure products accurately.

Answer 5

@Zeta

Answer 6

Wouldn't it be d?

Answer 7

Zeta?... :c

Answer 8

Err, I'm not sure if I could come up with a better explanation.

Answer 9

Wait! Is it d?! .-.

Answer 10

I'm done with my explanation...I believe that's the best I could do.

Answer 11

.-. I just need to know if d is correct out of the four choices