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aleksklad [387]
3 years ago
15

how to write a conversion factor that relates moles of HCL to moles of NiCO3 to the reaction of hydrochloric acid reacts with so

me reacts with solid nickel carbonate
Chemistry
1 answer:
Lelu [443]3 years ago
5 0

Answer:

See below.

Step-by-step explanation:

We call this conversion factor the <em>molar ratio.</em>

1. Start with the <em>balanced equation </em>

NiCO₃ + 2HCl ⟶ NiCl₂ + H₂O + CO₂

2. Note the <em>coefficients</em> of the substances

The equation tells you that 1 mol of NiCO₃ reacts with 2 mol of HCl·

Thus, the conversion factor is either (1 mol NiCO₃/2 mol HCl) or (2 mol HCl/1 mol NiCO₃).

You choose the one that gives the correct units for the answer.

<em>For example</em>, if the question was, "How many moles of HCl will react with x mol of NiCO₃," you would write

x mol NiCO₃ × (2 mol HCl/1 mol NiCO₃) ⟶ 2x mol HCl

Notice that putting "mol HCl" in the numerator and "mol NiCO₃" in the denominator cancels "mol NiCO₃" and gives you the desired units of "mol HCl" in the answer .

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