massa ekivalen H2C2O4.2H2O dalam reaksi asam basa adalah(:jika Ar C=12) a. 63 b.126 c.90 d.180 Tolong yaa plisss

a. 63

Mr H2C2O4.2H2O
= (ar H x 2) + (ar C x 2) + (ar O x 4) + (ar H x 4) + (ar O x 2)
= (1 x 2) + (12 x 2) + (16 x 4) + (1 x 4) + (16 x 2)
= 2 + 24 + 64 + 4 + 32
= 126 gr/mol

Berat ekuivalen = mr / valensi
Berat ekuivalen = 126 / 2
Berat ekuivalen = 63