reacting masses

define limiting reactants

when an ingredient has ran out first so you are limited of making the product, even though if you have lots and lots of the other ingredients like a cake.

What is the mass of sodium chloride that will be made when 12g sodium reacts with 12g chlorine?

find the balanced equation 2Na + Cl₂ → 2NaCl

then calcualte both of the molar mass

sodium = 0.52

chlorine = 0.17

find the limiting reactor. To use the full sodium (0.52), you need 0.26 of chlorine. But you have 0.17, so chlorine is the limiting reactor.

Look back to equation, it takes 1 chlorine to make to sodium chloride.

0.17 × 2 =0.34

find the mass (FORMULA = molar x relative formula mass)

0.34 × 58.8 =19.992

how to calculate mass

molar x relative formula mass.

2

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