AP Chemistrymediummcq1 pt
How many grams of HCl (36.5 g/mol) react completely with 4.0 g of NaOH (40.0 g/mol)?
A.3.7 g
B.4.0 g
C.36.5 g
D.1.8 g
Explanation
Core Concept
Moles NaOH = 4.0 ÷ 40.0 = 0.10 mol; the 1:1 reaction consumes 0.10 mol HCl × 36.5 g/mol = 3.7 g.
Correct Answer
A3.7 g
More Unit 4: Chemical Reactions practice questions
- easyWhat is the oxidation number of carbon in CO₃²⁻?
- easyIn 4Fe + 3O₂ → 2Fe₂O₃, which element is reduced?
- easyWhich observation is evidence of a physical change only?
- medium2.0 mol of N₂ and 2.0 mol of H₂ react via N₂ + 3H₂ → 2NH₃. How many moles of H₂ remain after complete reaction?
- easyWhich of these is a strong base?
Practice more AP Chemistry questions with full explanations
Practice Unit 4: Chemical Reactions Questions →