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marshall27 [118]
3 years ago
8

Which polyatomic ion is found in the compound represented by the formula NaHCO3?

Chemistry
1 answer:
olga nikolaevna [1]3 years ago
8 0

Answer is (2) - hydrogen carbonate


<em>Explanation:</em>


NaHCO₃ is an ionic compound which is made from Na⁺ and HCO₃⁻ ions. The decomposition is

NaHCO₃ → Na⁺ + HCO₃⁻


Among the resulted ions, Na⁺ is a monatomic ion while HCO₃⁻ is a polyatomic ion.


<em>Polyatomic ions mean ions which are made of two or more different atoms.</em>


HCO₃⁻ is made from 3 atoms as H, C and O. The name of HCO₃⁻ ion is bicarbonate or hydrogen carbonate.

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Hello there!

In this case, according to the given information, it turns out possible for us to calculate the required grams of HCl by firstly identifying the limiting reactant via the moles of each reactant as they are in a 1:1 mole ratio:

n_{H_2}=1.00gH_2*\frac{1molH_2}{2.02gH_2}=0.500molH_2\\\\ n_{Cl_2}=55.0gCl_2*\frac{1molCl_2}{70.9gCl_2}=0.776molCl_2

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m_{HCl}=0.500molH_2*\frac{2molHCl}{1molH_2}*\frac{36.46gHCl}{1molHCl}\\\\m_{HCl}=36.1gHCl

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