Not necessarily. Although a very dilute strong base can produce a pH of 10, so can a weak base such as ammonia.
It would indicate whether something is an acid or a base.
Either with a strong base or strong acid. Strong base would be faster.
14
A strong base would be around from 1-3 on the pH scale.
pH =12 is a very strong base. The high value pH is #14#.
it would be low
CoCO3 (Cobalt II carbonate) would be a weak base.
By "good" base, I assume you mean strong base. A generic strong base would be potassium hydroxide (KOH) or sodium hydroxide (NaOH)
HCl and MgOH
RbOH is a strong base because it completely disassociates in solution. Rb + cations and OH - anions would almost be all you would find in solution.
It would turn red in strong acid, orange/yellow in a weak acid, green in a neutral solution, blue in a weak base and purple in a strong base
The amount of base depends on the chemical formula of the acid.