Final answer:
To find the grams of calcium hydroxide needed, convert from grams of sodium carbonate. To find the grams of sodium hydroxide formed, use the stoichiometry of the balanced equation. Sodium hydroxide are formed = 374g NaOH
Step-by-step explanation:
To determine how many grams of calcium hydroxide are needed and how many grams of sodium hydroxide are formed when 500g of sodium carbonate reacts with calcium hydroxide, we need to consider the balanced chemical equation for the reaction:
Na2CO3 + Ca(OH)2 → CaCO3 + 2NaOH
According to the equation, one mole of sodium carbonate reacts with one mole of calcium hydroxide to produce one mole of calcium carbonate and two moles of sodium hydroxide.
To find the grams of calcium hydroxide needed, we need to convert from grams of sodium carbonate:
500g Na2CO3 x (1 mol Na2CO3/105.99g Na2CO3) x (1 mol Ca(OH)2/1 mol Na2CO3) x (74.09g Ca(OH)2/1 mol Ca(OH)2) = 354g Ca(OH)2
To find the grams of sodium hydroxide formed, we can use the stoichiometry of the balanced equation:
500g Na2CO3 x (1 mol Na2CO3/105.99g Na2CO3) x (2 mol NaOH/1 mol Na2CO3) x (39.997g NaOH/1 mol NaOH) = 374g NaOH.