JEE Mains · Chemistry · STD 11 - 1. Some basic concept of chemistry
14.0 g of calcium metal is allowed to react with excess HCl at 1.0 atm pressure and 273 K. Which of the following statements is incorrect ? [Given: Molar mass in g mol of Ca-40, Cl-35.5, H-1]
- A 0.35 mol of \( H_{2} \) gas is evolved.
- B 7.84 L of \( H_{2} \) gas is evolved.
- C 33.3 g of \( CaCl_{2} \) is produced.
- D The limiting reagent is calcium metal.
Answer & Solution
Correct Answer
(C) 33.3 g of \( CaCl_{2} \) is produced.
Step-by-step Solution
Detailed explanation
\(\underset{\frac{14}{40}}{ Ca _{( s )}}+\underset{\text { excess }}{2 HCl _{( g )}} \longrightarrow \underset{-}{ CaCl _{2(s)}}+\underset{-}{ H _{2(g)}}\) \(=0.35 mole \quad 0.35 mole \quad 0.35 mole\) Volume of \(H _{2(g)}\) evolved \(=0.35 \times 22.4=7.84 L\) (3) is wrong…
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