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Consider the reaction represented by the equation. 2NaHCO

Consider the reaction represented by the equation. 2NaHCO3(s) \(\rightarrow\) 2Na2CO 3(S) + CO 2(g) + H2O(g) what volume of carbon (IV)oxide at s.t.p is evolved when 0. 5 moles of NaHCO3 is heated? [Molar volume = 22.4 dm3 at s.t. p]

A.

1.12dm3

B.

2.24dm3

C.

5.6dm3

D.

56.0dm3

View answer & explanation

Correct answer is C

2NaHCO3(s) \(\rightarrow\) 2Na2CO 3(S) + CO 2(g) + H2O(g)

2 moles of 2NaHCO3(s) produces 22.4dm3 of CO2

0.5 moles of 2NaHCO3 will produce \(\frac{0.5 \times 22.4}{2}\)

= \(\frac{11.2}{2}\)

= 5.6 dm3

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