Which statement is true about tomato juice? a) it is an acid. b) it has a ph of 7.0. c) it is strongly basic in nature. d) it is a weak hydrophobic substance.

The correct answer is Option A.

Explanation:

Tomato is a citrus fruit which contains citric acid as a main chemical component.

The pH range for tomato juice is 4.1 to 4.6

This range lies in the range of acidic substances. Acids have a pH range of 0 to 6.9 and bases have a pH range of 7.1 to 14. Neutral solution has a pH of 7.

Hence, the correct answer is Option A.

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.