Using the following thermochemical data, what is the change in enthalpy for the following reaction: 3h2(g) + 2c(s) + ½o2(g) → c2h5oh(l) c2h5oh(l)+3o2(g)→2co2(g)+3h2o(l), δh = –1367 kj/mol c(s)+o2(g)→co2(g), δh = –393.5 kj h2(g)+½o2(g)→h2o(l), δh = –285.8 kj

The change in enthalpy for the formation of ethanol is -276.5 kJ/mol

Explanation:

The given reactions are:

The required reaction involves the formation of C2H5OH from C, H2 and O2:

This can be obtained by reversing reaction (1), multiplying equation (2) by 2, multiplying equation (3) by 3 and then adding the corresponding ΔH values

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.