reacts with to produce and . A solution containing of was mixed with a solution containing of . How many grams of which reactant remain after the reaction is over?

Question

reacts with  to produce  and . A solution containing  of  was mixed with a solution containing  of . How many grams of which reactant remain after the reaction is over?

Canvas Classes · Accepted Answer

Strategy:
 To find the leftover amount, identify the limiting reagent and calculate how much of the excess reagent reacts. The difference between the initial and reacted mass of the excess reagent is the remainder.

Step 1: Write balanced equation

Step 2: Calculate moles and find limiting reagent
- Moles 
- Moles 
Req. ratio: . For  , we need  .
Since we have ,  is in excess.

Step 3: Calculate mass left over
Moles  reacted 
Moles  left

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