carliejude2018 carliejude2018

08-11-2017
Chemistry

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When the equation HCl + MnO2 → MnCl2 + H2O + Cl2 is balanced, what is the coefficient for HCl? Question 6 options: 2 3 1 4

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andriansp andriansp

08-11-2017

HCl + MnO2 → MnCl2 + H2O + Cl2
To balance this reaction, we have to have an exact number of electrons of each element on both sides. So it will turn into:

4HCl + MnO2 → MnCl2 + 2H2O + Cl2

From that, we could see that the coefficient for the HCL is 4.

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27-11-2018

the coefficient is 4 i took the test

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