Open Question
Calculate the molar mass for each of the following:c. Fe(ClO₄)₃
6. Chemical Reactions & Quantities
Calculating Molar Mass
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The reaction between nickel metal and hydrochloric acid is not a simple dissolution. The product formed is NiCl2 • 6 H2O (s), nickel (II) chloride hexahydrate, which has exactly 6 waters of hydration in the crystal lattice for every nickel ion. What is the molar mass of nickel (II) chloride hexahydrate, NiCl2 • 6 H2O (s)?
A
228.99 g/mol
B
231.01 g/mol
C
234.71 g/mol
D
237.69 g/mol
Verified step by step guidance1
Identify the chemical formula for nickel (II) chloride hexahydrate, which is NiCl_2 • 6H_2O.
Determine the atomic masses of each element involved: Nickel (Ni), Chlorine (Cl), Hydrogen (H), and Oxygen (O). Use the periodic table for these values: Ni = 58.69 g/mol, Cl = 35.45 g/mol, H = 1.01 g/mol, O = 16.00 g/mol.
Calculate the molar mass of NiCl_2 by adding the atomic masses: 1 Ni (58.69 g/mol) + 2 Cl (2 x 35.45 g/mol).
Calculate the molar mass of 6H_2O by adding the atomic masses: 6 x (2 H (2 x 1.01 g/mol) + 1 O (16.00 g/mol)).
Add the molar mass of NiCl_2 and 6H_2O to find the total molar mass of NiCl_2 • 6H_2O.
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