Question

the ph of a 0.01M solution of a monobasic acid is 4 which one of the following statement about the acid is incorrect
A) when a little Noah is added it will form a buffer solution
B) it is a weak acid
​

Answer 1

Answer:

For 0.1M HCL, pH= -log(0.1)=1, so the [HCl]=.1 and its pH = 1

For 0.1M NaOH], pOH=-log(0.1)=1, which means the pH=13, (remember pH+pOH=14), but 13 has two sig. figures, so you must use the convention in figure 16.2.2, and the answers are pH=1.0 for 1MHCL, and pH=13.0 for 1M NaOH.

(Realize that pH=13 equates to the decimal 0.0000000000001 or 11013 , that is, it is not a measured number, but the number of times you divided by 10.

hope it helps you ♥️♥️