How many moles of TiCl4 can be produced when 9.00 mol Ti react with 4.00 mol Cl2?

Answer 1

This is a limiting reagent problem.
1. Write the equation and balance it.
2. Using the coefficients in the balanced equation, convert moles Ti to moles TiCl4.
3. Do the same procedure to convert moles Cl2 to moles TiCl4.
4. Likely, the answer to 2 will be different from the answer to 3. Obviously, one of them must be incorrect. The correct one in limiting reagent problems is ALWAYS the smaller value.