Is there any monobasic solid acid with a molar mass of 120?
NaH2PO4
Molecular Weight 119.98
I guess that's about as close as you're gonna get. But I guess you can use google as well as I can...
To determine whether there is a monobasic solid acid with a molar mass of 120, we need to evaluate the possible options.
First, let's clarify that monobasic means the acid can donate only one proton (H+ ion) per molecule.
To find potential candidates, we need to consider the molar mass of known acidic compounds. We'll look for compounds that have a molar mass close to 120 g/mol.
One way to approach this is by searching through the periodic table for elements with low atomic masses that could form acid compounds. For example, elements like hydrogen (H), carbon (C), nitrogen (N), oxygen (O), and sulfur (S) are common in organic and inorganic acids.
In this case, we are trying to find a solid acid, so we should eliminate gases such as hydrogen chloride (HCl) and sulfur dioxide (SO2), which are usually found in a gaseous state.
Considering the molar masses, we can make a list of compounds and check if any have a molar mass close to 120 g/mol:
1. Formic acid (HCOOH) -- molar mass: 46 g/mol
2. Acetic acid (CH3COOH) -- molar mass: 60 g/mol
3. Benzoic acid (C6H5COOH) -- molar mass: 122 g/mol
4. Oxalic acid (H2C2O4) -- molar mass: 90 g/mol
5. Citric acid (C6H8O7) -- molar mass: 192 g/mol
From the list above, we can see that benzoic acid (C6H5COOH) has a molar mass close to 120 g/mol (122 g/mol). However, it is important to note that benzoic acid is a solid at room temperature.
Therefore, the answer to your question is yes, there is a monobasic solid acid with a molar mass close to 120 g/mol, which is benzoic acid.