What is the acid dissociation constant, Ka, for propionic acid, C2H5COOH in water?

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

The rate of a particular reaction was measured at several different temperatures. A graph of ln k versus 1/T gives a slope of -2.82 x 103 K. Calculate the activation energy for the reaction given R is the gas constant (8.314 J/mol-K) given Ea = -slope x R.

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

If the pH of a solution is 7.27, which of the following statements is true?

Which best explains why HF is not a strong acid?

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

Which reaction rate statement is true for the reaction A → B?

A 4 year old girl presents to the emergency unit with a rigid neck and her head tilted to  the side. She had been given an injection to stop vomiting by another healthcare worker 3 hours before the emergency unit visit. The injection is likely to have been:            1.        Omeprazole2.        Haloperidol3.        Metoclopramide4.        Dexamethasone5.        Misoprostol

    The following drug is indicated for postoperative nausea and vomiting:                    1.        Dexamethasone2.        Omeprazole3.        Senna4.        Lubiprostone 5.        Loperamide