Below is a generic equation for a reaction. if i mix 2 units of a, with 6 units of b, which of the following is true? 2a + 3b ? c + 3da. there would be no reaction. b. both reactants will fully react. c. not enough information givend. substance b will be the limiting reactant. e. substance a will be the limiting reacta

substance A will be the limiting reactant. Substance B will be in excess. Option E is correct.

Explanation:

Step 1: Data given

We mix 2 units (moles) of A with 6 units(moles) of B

Step 2: The balanced equation:

2A + 3B → C + 3D

Step 3: Determine the limiting reactant

For 2 moles of A we need 3 moles of B to produce 1 mol of C and 3 moles of D

IF A would be the limiting reactant, it means it would completely be consumed ( 2 units).

B is in excess. there would react 2 *3/2 = 3 units.

There would remain 6 - 3 = 3 units of B

If B would be the limiting reactant, it means it would completely be consumed (6 units).

A would be in excess, there would react 6 * 2/3 = 4 units.

This would be impossible.

We can decide that substance A will be the limiting reactant. Substance B will be in excess. Option E is correct.