1.

(H_3 PO_4 , , ^{ underrightarrow{1}} H_4 P_2 O_7 , , ^{ underrightarrow{1}} HPO_3 ) Indicate the temperatures 1and 2?

A. 1.300 C 2.1000 C
B. 1.250 C 2.900 C
C. 1.250 C 2.500 C
D. 1.100 C 2.1000 C
Answer» C. 1.250 C 2.500 C


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