potassium and water is 50 g in mass
will potassium hydroxide and hydrogen be 60 g in mass?
if not, what is the mass of potassium hydroxide and hydrogen?
use the law of conservation to answer
No, the mass of potassium hydroxide and hydrogen will not be 60 g. According to the law of conservation of mass, the total mass of the reactants must equal the total mass of the products in a chemical reaction.
The reaction between potassium and water can be represented as:
2K + 2H2O -> 2KOH + H2
From the reaction, we can see that 2 moles of potassium react with 2 moles of water to produce 2 moles of potassium hydroxide and 1 mole of hydrogen gas.
The molar mass of potassium hydroxide (KOH) is approximately 56.11 g/mol, and the molar mass of hydrogen gas (H2) is approximately 2.02 g/mol.
Given that the mass of potassium and water is 50 g, we can calculate the mass of potassium hydroxide and hydrogen as follows:
Mass of potassium hydroxide = 2 moles * 56.11 g/mol = 112.22 g
Mass of hydrogen = 1 mole * 2.02 g/mol = 2.02 g
Therefore, the total mass of potassium hydroxide and hydrogen produced in this reaction is 112.22 g + 2.02 g = 114.24 g.