How many of the following are weak acids?
HCN HClO₂HNO₃ H₂PO₄^⁻

Question

How many of the following are weak acids? HCN HClO₂HNO₃ H₂PO₄^⁻ A)0 B)1 C)3 D)4 E)2

Quizplus · Accepted Answer

A weak acid is an acid that only partially dissociates in aqueous solution. Looking at the given compounds, HCN (hydrogen cyanide), HS1U1B12S1U1B0PO4 (hydrogen sulfate), and HS1U1B00S1U1P1⁻S1S1P0 (hydrogen phosphate) are all weak acids. The others (HClO, S1U1B12, S1U1B0HNOS1U1B13S1U1B0, and S1U1B12S1U1B0POS1U1B14S1U1B0S1U1P1⁻S1S1P0) are either strong acids or non-acids. Therefore, the best choice is C)3.

How Many of the Following Are Weak Acids