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17 Section C – Module C6 12 Harry investigates the electrolysis of dilute sulfuric acid. Look at the apparatus he uses.

(a)

Bubbles of gas are made at both electrodes. Hydrogen is one of the gases made. Write down the name of the other gas made during the electrolysis. ................................................................................................................................................ [1]

(b)

Hydrogen is made when hydrogen ions, H+, gain electrons. Construct the balanced symbol equation for this process. Use e- to represent an electron. ................................................................................................................................................ [1]

Š OCR 2011

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C6 question 12 (1)  
C6 question 12 (1)  
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