Which of the following is not an exothermic reaction ? ………………… 1) C + O2 → CO2
Which of the following is not an exothermic reaction ? …………………
1) C + O2 → CO2
2) N2 + O2 → 2NO
3) CaCO3→ CaO + CO2
4) HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
A) 2
B) 2, 3
C) 1
D) 1, 4
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