What is the limiting reagent when 5 moles of A react with 3 moles of B in the reaction A + 2B → C?
Practice Questions
1 question
Q1
What is the limiting reagent when 5 moles of A react with 3 moles of B in the reaction A + 2B → C?
A
B
C
None
The reaction requires 2 moles of B for every mole of A. For 5 moles of A, 10 moles of B are needed. Since only 3 moles of B are available, B is the limiting reagent.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the limiting reagent when 5 moles of A react with 3 moles of B in the reaction A + 2B → C?
Solution: The reaction requires 2 moles of B for every mole of A. For 5 moles of A, 10 moles of B are needed. Since only 3 moles of B are available, B is the limiting reagent.
Steps: 5
Step 1: Identify the reaction equation: A + 2B → C.
Step 2: Determine how many moles of B are needed for the given moles of A.
Step 3: Since the reaction requires 2 moles of B for every 1 mole of A, calculate the moles of B needed for 5 moles of A: 5 moles of A × 2 moles of B/mole of A = 10 moles of B.
Step 4: Compare the moles of B needed (10 moles) with the moles of B available (3 moles).
Step 5: Since only 3 moles of B are available and 10 moles are needed, B is the limiting reagent.
