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10.0 L of air of STP was slowly bubbled ...

`10.0 L` of air of `STP` was slowly bubbled through `50 mL` of `N//25Ba(OH)_(2)` solution and the final solution rendered red with phenoophthalein. After filtering the solution from the precipitated `BaCO_(3)`, the filtrate requried `22.5 mL` of `N//12.5 HCl` to becomes just colourless. Calculate the % age by volume of `CO_(2)` in the air.

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To solve the problem step by step, we will follow the procedure outlined in the video transcript. ### Step 1: Calculate the moles of HCl used for neutralization We know that 22.5 mL of N/12.5 HCl was used to neutralize the remaining barium hydroxide. 1. Convert the volume of HCl from mL to L: \[ \text{Volume of HCl (L)} = \frac{22.5 \, \text{mL}}{1000} = 0.0225 \, \text{L} ...
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