What is the value of rate constant for first order reaction if slope for the graph of rate versus concentration is $$2.5 \times 10^{-3}$$ ?

An organic monobasic acid has dissociation constant $$2.25 \times 10^{-6}$$. What is percent dissociation in its $$0.01 \mathrm{~M}$$ solution?

Which of the following pair of compounds demonstrates the law of multiple proportions?

Which of the following amines on heating with chloroform generate foul smelling product?