It can be both but ammonium chloride is usually purchased as a solid crystalline material.
Ag3PO4 is a solid compound. It is not soluble in water, so it exists as a solid in aqueous solutions.
Ammonium chloride (NH4Cl) is a solid at room temperature because it has a high melting point of 338°C.
Cu(OH) is a solid compound.
Usually, ammonia in water solution is presented as NH3.H2O (sometimes NH4OH which is rather incorrect) then NH3.H2O + HCl = NH4Cl + H2O but also this reaction is correct NH3 + HCl = NH4Cl
Copper sulfide is a solid compound, not aqueous. It is typically found in nature as a solid mineral and has a low solubility in water.
The correct formula is NH4Cl. This compound can be found both as a solid and in an aqueous solution.
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Ag3PO4 is a solid compound. It is not soluble in water, so it exists as a solid in aqueous solutions.
Ammonium chloride (NH4Cl) is a solid at room temperature because it has a high melting point of 338°C.
Cu(OH) is a solid compound.
Ammonium ion (NH4+) is typically found in aqueous solution when it is part of a soluble salt, such as ammonium chloride (NH4Cl). In this context, the NH4+ ion is dissolved in water, making it aqueous. However, NH4+ itself is not a standalone aqueous substance; it must be in solution with a counterion to be considered aqueous.
its aqueous when dissolved in water and solid (@STP) when not
NH4NO3(aq) + KCL(aq) --> KNO3(s) + NH4CL(aq) This is a type of metathesis reaction called a double displacement reaction. Aqueous ammonium nitrate and aqueous potassium chloride yields solid potassium nitrate and aqueous ammonium chloride. Essentially the cations and anions of the reactants switch, and potassium nitrate (one of the products) precipitates out of the solution as a solid. The ammonium chloride (the other product formed) remains dissociated as ions in the solution. The above reaction is balanced.
Calcium phosphate is solid.
Usually, ammonia in water solution is presented as NH3.H2O (sometimes NH4OH which is rather incorrect) then NH3.H2O + HCl = NH4Cl + H2O but also this reaction is correct NH3 + HCl = NH4Cl
Copper sulfide is a solid compound, not aqueous. It is typically found in nature as a solid mineral and has a low solubility in water.
It is a white granular solid, like most salts.