Explanation:
In acid – base chemistry, salts are ionic compounds that result from the neutralization reaction of an acid and a base. Basic salts contain the conjugate base of a weak acid, so when they dissolve in water, they react with water to yield a solution with pH greater than 7.0.
PH of water is 7 I hope the answer is correct ehe
All of the are false lowest it can be without a human ear picking up is 19 hertz
