Question

Sodium and Chlorine combine to form table salt. Given the chemical reaction, how many grams of 2Na + Cl2 would be required to produce 4 grams of table salt?
A) 2 grams
B) 3 grams
C) 4 grams
D) 8 grams

Answer 1

4 grams... as by the rule of correspondence the total mass of reactants equals the total mass of the products.
Thus to produce 4 grams of table salt... 4 grams of the mixture (2Na + Cl2) is required

Answer 2

A) 2 grams

The sodium and chlorine form the chemical compound of sodium chloride (NaCl) in the ratio of 1:1.

The molecular mass of the chemical compound of sodium chloride (NaCl) is 58.44 g/mol.

Given the chemical formula 2Na(s) + Cl2(g) ------ 2 NaCl(s) = 2 mole of NaCl.

2 mol NaCl x 58.44 g / mol NaCl = 116.88 g NaCl.

Sodium chloride (NaCl) - Sodium chloride, also known as salt, common salt, table salt or halite, is an ionic compound with the formula NaCl, representing equal proportions of sodium and chloride.

Brand names: Cleanoz, Na-zone

Formula: NaCl

Molar mass: 58.44 g/mol

Melting point: 1,474°F (801°C)

Density: 2.16 g/cm³

Soluble in: Ammonia, Methanol, and Water