9701 s16_qp_12.pdf - Adobe Reader Edit View Window Help
a Open
Tool
Fill B. Sign
Comment
143%
9
In the treatment of domestic water supplies, chlorine is added to the water to form HCIO.
Cl2(aq) + H2O(1) ►
H(aq) + Cl(aq) + HCIO(aq)
The HCIO reacts further to give CIO ions.
HCIO(aq) + H2O(l) 7H30*(aq) + CIO (aq)
Both HCIO and C10 kill bacteria by oxidation.
What is the change in oxidation number of chlorine when forming the Cio-ion from aqueous
chlorine?
B 0
D
A-1
C +1
+2
9701/12/M/J/16
© UCLES 2016

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

Calculate the number of moles of ethane in 100 grams

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent