Identify the product of following reaction.

Benzoyl chloride $$\stackrel{\mathrm{H}_2 \mathrm{O}}{\longrightarrow}$$ product

What is IUPAC name of the compound?

Calculate the $$\mathrm{pH}$$ of $$1.36 \times 10^{-2} \mathrm{M}$$ solution of perchloric acid.

Which of the following formulae is used to determine compressibility factor for measurement of deviation from ideal behaviour?