How much heat will be released during the complete combustion of 300 g of alcohol?

How much heat will be released during the complete combustion of 300 g of alcohol? How much water can be heated to 60C with this heat?

As we know, the amount of heat that will be released during the combustion of a substance can be calculated by the formula:

Q = q * m, where q is the specific heat of combustion of the selected substance.

Let’s determine what value the amount of heat will be equal to, what will be released if 300 grams of alcohol burns out:

300 g = 0.3 kg;

0.3 * 2.7 * 10 ^ 7 = 0.81 * 10 ^ 7;

Let us determine what value the mass of water will be equal to, which can be heated by 60 ° (we assume that from 0 °):

Q = c * m * Δt;

m = Q: (c * Δt);

0.81 * 10 ^ 7: (4.212 * 10 ^ 3 * 60) ≈ 32.

Answer: 32 kg.