1.

Which compound has a greater percent by mass of chromium?

Answer»

Answer:

K2CRO4

Explanation:

MOLAR MASS of K2CrO4 is 194.2 g/mol

Cr contributes 52 g

in K2CrO4 Cr = 26.8 %

Molar mass of K2CR2O7 is 294.2 g/mol

Cr contributes 2 atoms or 104g

in K2Cr2O7 Cr = 35.35 %

when you do the CALCULATION correctly you can see that the dichromate has considerably more percentage of Chromium



Discussion

No Comment Found

Related InterviewSolutions