Citric acid, c6h8o7, a component of jams, jells and fruity soft drinks, is prepared industrially via a fermentation of sucrose by the moid aspergillus niger. the equation representing this raction id :
c12h22o11 + h2o + 3o2 ? 2c6h8o7 +h2o
what mass of nitric acid is produced from exactly 1 metric on(1000 x 103 kg) of sucrose if the yield is 92.30%?

1.04 tonnes

Explanation:

As we have the equation balanced, we need to know, form the percent yield and the theoretical yield, the actual yield:

With this, we need to convert the mass of sucrose into moles:

Now, with the yield, we apply the rule of three, with the actual yield, to know the moles of citric acid produced:

Therefore, 5392.93 moles of citric acid are produced, now we need to know the mass:

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.