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the answer is d cause chlorine is produced at the anode ,,, and because it bleaches the indicator the colour becomes white near the anode.....and at the cathode the alkali is formed which turns indicator blue....hope i helped,,,,....
the answer of 15 in nov 1998 is c....because to make a reaction go slower.... we have to make the solid bigger...therefore less particles take part in the reaction...leading to less collision and a slower rate of rxn....option 2 , is to make it less conc. this leads to less solute particles in da acid....therefore slower rate of rxn....hope i helped......
Hey people PLease, does anyone have chemistry paper1 1999 till 2002 MARKING SCHEME??I really need them guys , it is really important..What is the use if I have the question papers and I don't have the marking scheme??If anyone has, please say.... It will help us all.....