Unfortunately, there seems to be a misunderstanding here. H2Cr6O10 is not a valid molecular formula. You might be looking for information on H2CrO4, commonly known as chromic acid, or H2Cr2O7, commonly known as dichromic acid.
If you’re interested in chromic acid H2CrO4, it is a strong acid composed of 1 Hydrogen atom, 1 Chromium atom, and 4 Oxygen atoms. Chromic acid has a deep red color, no distinct odor, and a low pH (below 7).
In chemical reactions, H2CrO4 can react with metals to form salts and H2 gas, can react with other acids to form salts and water, or can react with bases to form salts and water.
To prepare H2CrO4, the commonly-used method is to react K2Cr2O7 with dilute H2SO4.
However, if you’re interested in dichromic acid H2Cr2O7, it is a strong acid with an orange-red color, no distinct odor, and a low pH (below 7). This acid can react with metals, acids, or bases, forming salts and other products.
To prepare H2Cr2O7, the commonly-used method is to react K2Cr2O7 with concentrated H2SO4.
But once again, H2Cr6O10 is not a valid molecular formula.