Question on: SS1 Chemistry - Chemical Reactions and Stoichiometry
What is the molar mass of sodium hydroxide (NaOH)?
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A
22 g/mol
B
40 g/mol
C
56 g/mol
D
62 g/mol
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Correct Option: B
The molar mass of sodium hydroxide (NaOH) can be calculated by adding up the atomic masses of its constituent elements.
The atomic masses of sodium (Na), oxygen (O), and hydrogen (H) are as follows:
Sodium (Na) = 22.99 g/mol
Oxygen (O) = 16.00 g/mol
Hydrogen (H) = 1.01 g/mol
To calculate the molar mass of NaOH, we sum the atomic masses:
Molar mass of NaOH = Atomic mass of Na + Atomic mass of O + Atomic mass of H
= 22.99 g/mol + 16.00 g/mol + 1.01 g/mol
= 40 g/mol
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