Which of the following equations does not have 1:2:1:2 as the relative ratio of coefficients when balanced?
A) H2SO4 + KOH → K2SO4 + H2O
B) Ca(OH) 2 + HCl → CaCl2 + H2O
C) CH4 + O2 → CO2 + H2O
D) K + H2O → H2 + KOH
Correct Answer:
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