To prevent corrosion and make paints adhere better, some aluminum products are treated with chromium(III) phosphate before finishing.
Chromium(III) phosphate (CrPO4) is commercially produced by treating chromium metal with orthophosphoric acid (H3PO4).
a. Balance the following equation for the reaction. Cr(s) + H3PO4(aq) H2(g) + CrPO4(s)
b. How many moles of chromium metal are needed to produce 855 g of chromium(III) phosphate?
c. The reaction of 206 g chromium will release how many moles of hydrogen gas?