May 2019 1 2K Report
Diketahui reaksi:
CaC2(s) + 2H2O(l) -> Ca(OH)2(aq) + C2H2(g) + 411kJ
Jika 12,8 gram CaC2 (Mr:64) direaksikan dengan air, perubahan entalpi yang terjadi adalah..
a. reaksi melepas kalor 8,22 kJ
b. reaksi menyerap kalor 41,1kJ
c. reaksi melepas kalor 41,1 kJ
d. reaksi melepas kalor 82,2kJ
e. reaksi menyerap kalor 82,2 kJ

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