Describe the effect of each of the following on the rate of the reaction of magnesium metal with a solution of hydrochloric acid: the molarity of the hydrochloric acid, the temperature of the solution, and the size of the pieces of magnesium.

Draw the condensed smtctural formula for a mixed triacyl- glycerol that contains two palmitic acid molecules and one oleic acid molecule on the center carbon of glycerol.

Is the following sentence true or false? You can calculate the acid dissociation constant $\left(K_{\mathrm{a}}\right)$ of a weak acid from experimental data.

Can the pH of a solution be negative? Explain. True or false: A strong acid solution always has a lower pH than a weak acid solution. Explain.

Solve the following exercise.

Calculate the $K_{\mathrm{a}}$ of a weak acid if a 0.19- M aqueous solution of the acid has a pH of 4.52 at $25^{\circ} \mathrm{C}$

In nonaqueous solvents, it is possible to react $HF$ to create $H_2F^+.$ Which of these statements follows from this observation? There is an acid in the nonaqueous medium that is a stronger acid than HF.

Write the balanced reaction of hypochlorous acid, $HOCl$, with water to form hydronium ion and the conjugate base of $HOCl$. Identify each species as either an acid or a base.

Predict the product of the reaction of propanal with each of the following: (a) Lithium aluminum hydride, followed by water (b) Sodium borohydride, methanol (c) Hydrogen (nickel catalyst) (d) Methylmagnesium iodide, followed by dilute acid (e) Sodium acetylide, followed by dilute acid (f) Phenyllithium, followed by dilute acid (g) Methanol containing dissolved hydrogen chloride (h) Ethylene glycol, p-toluenesulfonic acid, benzene (i) Aniline $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{N} \mathrm{H}_{2}\right)$ (j) Dimethylamine, p-toluenesulfonic acid, benzene (k) Hydroxylamine (l) Hydrazine (m) Product of part (l) heated in triethylene glycol with sodium hydroxide (n) p-Nitrophenylhydrazine (o) Semicarbazide (p) Ethylidenetriphenylphosphorane (q) Sodium cyanide with addition of sulfuric acid (r) Chromic acid

Classify the following as a binary ionic compound, ternary ionic compound, binary molecular compound, binary acid, or ternary oxyacid.

Stomach acid, $\mathrm{HCl}(a q)$

If you saw the label phenylephrine $\mathrm{HCl}$ on a decongestant, would you worry that consuming it would expose you to the strong acid hydrochloric acid? Explain.

Alanine is an amino acid in protein. If 21.05 milliliters of 0.145 M sodium hydroxide neutralizes 0.272 grams Alanine, what is the molar mass of the amino acid?

A dehydration synthesis reaction between glycerol and a single fatty acid would yield a(n)

a) micelle.

b) omega-3 fatty acid.

c) monoglyceride.

d) diglyceride.

The most important factor affecting the pH of body tissues is the

a) hydrochloric acid.

b) ketone bodies.

c) lactic acid.

d) partial pressure of carbon dioxide.

What is the general formula of a carboxylic acid?