Which of the following equations is NOT balanced properly?
A) 2Cr + 6HCl ? 2CrCl3 + 3H2
B) 2NaHCO3 ? Na2CO3 + CO2 + H2O
C) Cr2(SO4)3 + 6KOH ? 2Cr(OH)3 + 3 K2SO4
D) 4NH3 + 14O2 ? 4NO2 + 6H2O
E) none of the above
Answer: D
Which of the following equations is NOT balanced properly?
A) 2Cr + 6HCl ? 2CrCl3 + 3H2
B) 2NaHCO3 ? Na2CO3 + CO2 + H2O
C) Cr2(SO4)3 + 6KOH ? 2Cr(OH)3 + 3 K2SO4
D) 4NH3 + 14O2 ? 4NO2 + 6H2O
E) none of the above