Write the reaction equations: a) carbon dioxide → glucose → sorbitol; b) glucose → gluconic acid

Write the reaction equations: a) carbon dioxide → glucose → sorbitol; b) glucose → gluconic acid → sodium gluconate (sodium salt of gluconic acid) c) glucose → ethyl alcohol → ethylene ↓ lactic acid

a) this equation consists of two transformations: in order to get glucose from carbon dioxide, you need to add water, as a result, we get glucose and the release of carbon dioxide. To obtain sorbitol, you need to add hydrogen (light colorless gas) to glucose, as a result of this reaction we get sorbitol.
b) this equation also consists of two transformations.
c) this equation consists of three transformations.