SATHEE: Some Basic Concepts Of Chemistry Question 247

Some Basic Concepts Of Chemistry Question 247

Question: The mass of $B a C O_{3}$ produced when excess $C O_{2}$ is bubbled through a solution of 0.205 mol $B a {(O H)}_{2}$ is [UPSEAT 2004]

Options:

A) 81 g

B) 40.5 g

C) 20.25 g

D) 162 g

Show Answer

Answer:

Correct Answer: B

Solution:

$B a {(O H)}_{2} + C O_{2} \to B a C O_{3} + H_{2} O$

Atomic wt. of $B a C O_{3}$ = $137 + 12 + 16 \times 3$ = 197 No. of mole $= \frac{w t . of substance}{mol wt .}$

$∵$ 1 mole of $B a {(O H)}_{2}$ gives 1 mole of $B a C O_{3}$

$∴$ 205 mole of $B a {(O H)}_{2}$ will give .205 mole of $B a C O_{3}$

$∴$ wt. of 0.205 mole of $B a C O_{3}$ will be $.205 \times 197 = 40.385 g m \approx, 40.5, g m$

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Some Basic Concepts Of Chemistry Question 247

Question: The mass of BaCO3 produced when excess CO2 is bubbled through a solution of 0.205 mol Ba(OH)2 is [UPSEAT 2004]

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Question: The mass of $B a C O_{3}$ produced when excess $C O_{2}$ is bubbled through a solution of 0.205 mol $B a {(O H)}_{2}$ is [UPSEAT 2004]