Question

How many grams of Sodium metal are required to completely react with 100 g of Magnesium chloride hexahydrate in a single replacement reaction? (Write a balanced equation first. You don’t need the hydrate part in the balanced equation, you only need it when you do the molar mass of the given).

Answer 1

MgCl2 - 6H2O

203.3 mol

MgCl2 + 2Na = 2NaCl + Mg

22.6g

Step-by-step explanation:

1. Write the formula of hydrate and find molar mass.

2. Write a balanced single replacement (don't include H2O)

3. Do the given/wanted calculation (include H2O in molar mass of given)