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

$[Given : Molar mass in g mol {}^{- 1}{of Ca –40}, Cl –35.5, H – 1]$ [2026]

Question

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 ?

$[Given : Molar mass in g mol {}^{- 1}{of Ca –40}, Cl –35.5, H – 1]$ [2026]

Smart Achievers · Accepted Answer

(4)

$\begin{matrix} {Ca}_{(s)} & + & 2 {HCl}_{(g)} & \to & {CaCl}_{2 (s)} & + & H_{2 (g)} \\ \frac{14}{40} & excess & - & - \end{matrix}$

= 0.35 mole 0.35 mole 0.35 mole

$Volume of H_{2 (g)} evolved = 0.35 \times 22.4 = 7.84 L$

${(4) is wrong because weight of CaCl}_{2} = 0.35 \times 111 = 38.85 g$

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