The drug aceclofenac has a carboxylate group with a pKa value of 3.4. Rounded to the nearest integer, what is the ratio of [deprotonated]/[protonated] aceclofenac, at physiological pH? Be sure to use the value for physiological pH that we discussed in class.数值题

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Two buffer salts have been provided to you to make 100 mL of phosphate buffer with a total phosphate concentration of (0.03 M). They are:已提供两种缓冲盐，用于制作 100 毫升磷酸盐缓冲液，总磷酸盐浓度为 0.03 M。它们是： Acid: Sodium dihydrogen phosphate monohydrate, (NaH2PO4 · H2O) MW: 137.99 g/mol酸：二氢化磷酸钠一水合物，（NaH 2 PO 4 ·H 2 O） 最大重量：137.99 克/摩尔 Salt/Conjugated Base: Disodium hydrogen phosphate (Na2HPO4) anhydrous, MW: 141.96 g/mol盐/共轭碱：无水磷酸二钠（Na 2 HPO4），MW：141.96 g/mol What is the amount of base required (in mg) when [A-]/[HA] is 1.01?当[A]/[HA]为 1.01 时，所需的碱量（以毫克计）是多少？

If a functional group has a pKa of 9, then what is the deprotonated:protonated ratio for this functional group at pH 4?

What is the pH of a buffer that is 0.120 M in formic acid (HCO2H) and 0.080 M in potassium formate (HCO2K)? For formic acid, Ka = 1.8 10–4.

What is the pH of a buffer that is 0.120 M in formic acid (HCO2H) and 0.080 M in potassium formate (HCO2K)? For formic acid, Ka = 1.8 × 10–4.

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