i. There are 0.84 moles of B in the flask after 60s. ii. The decrease in every 20 s is not a constant value. iii. The rate of reaction is constant across all timepoints.

The following data were measured for the reaction BF3(g) + NH3(g) → F3BNH3(g). What is the rate law for the reaction?

Which best explains why HF is not a strong acid?

The hydrogen carbonate ion (HCO3-) is amphiprotic in water. If HCO3- is the Brønsted-Lowry base, what is the conjugate acid?

Arrhenius defines an acid as

Based on their activation energies and energy changes and assuming that all collision factors are the same, rank to the following reactions from slowest to fastest. (i) Ea= 45 kJ/mol; ΔE=–25 kJ/mol (ii) Ea= 35 kJ/mol; ΔE=–10 kJ/mol (iii) Ea= 55 kJ/mol; ΔE=10 kJ/mol

A reaction A + B → C obeys the following rate law: Rate = k 2. What are the reaction orders for A and B and the overall reaction order?

From the following values for a calculated rate constant, which one would be for a first-order reaction?

Which of the following statements is true for a reaction as a function of time?

 The following drug combinations can be used for hormone replacement therapy in  women with an intact uterus except:                                                                                     1.        Cyproterone/oestrogen2.        Dydrogesterone/oestrogen3.        Norethisterone/oestrogen4.        Norgestrel/oestrogen5.        Dienogest/oestrogen