3. Why do soap bubbles rise in the air when passed through hydrogen gas?
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When hydrogen is passed through the soap solution hydrogen doesn 't get dissolved in it and this gas tries to escape from the solution into the environment when it reaches the upper surface of soap solution it escapes as bubbles because in soap solution it had less space but as it entered the air it got more space to ...
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On passing hydrogen gas through soap solution it does not get dissolved in it, and the solution easily form bubbles containing hydrogen gas. The presence of hydrogen gas can be tested with the help of a burning splinter near the bubbles. Therefore, soap solution can be used in testing of hydrogen gas.
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