There is no hard and fast rule that can determine an acid/base solely from the formula.
Some can be derived from knowing the electronegativities and bonding behaviour of the elements concerned; some can be determined from knowing the electronic configurations of the elements; some can be told simply from memory i.e. if you know it's an acid/base then it's an acid/base.
Some cannot be derived at all from the formula; amphoteric substances for example, will be either basic or acidic depending on the conditions, and some substances will only act in certain ways in certain conditions too.
HClO4 is an acid. Hint: if "H" is at the beginning of a chemical formula, the compound is probably an acid.
Diesel is neither acid nor base it is a neutral mixture of several hydrocarbons.
Hydrogen itself is a gas. (H2) Hydrogen with other certain elements create acids.
Fe2O3 It is neither an acid or a base, and it is a compound, not an element
Because KOH is potassium hydroxide, you can recall that in biology you must have learned about H+ being and acid and OH- being a base and K(OH) contains the one hydroxide making it a base, not an acid.
CH3OH is not a base and neither is it an acid. This is the chemical formula of methanol which is an alcohol.
If you meant HCl, Hydrochloric Acid, it is a strong acid and not a base. A way to tell if it is an acid is that it has an H+ in the chemical formula. Most of the time, if it is a base it has an OH- attached to the chemical formula, but this is not necessarily true for all bases.
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Ammonia is a base with the chemical formula NH3.
It is a base .... at least to my chemical knowledge
The amount of base depends on the chemical formula of the acid.
HClO4 is an acid. Hint: if "H" is at the beginning of a chemical formula, the compound is probably an acid.
Salts are neither acidic or alkaline; they are neutral. Salts are a product of a chemical reaction between an acid and a base.
Interesting and very difficult to put into x amount of letters.
An "acid" is a chemical that has a PH lower than 7.0 and a "base" is a chemical that has a PH higher than 7.0. It would be impossible for a chemical to have a PH both lower and higher than 7.0 at the same time. Pure water has a PH of exactly 7.0 and is therefore neither an acid nor a base.
Neither acid nor base.
Neither. Dextrose is a form of sugar. It is neither an acid nor a base.