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grandymaker [24]
2 years ago
15

11 swimming pool water can be kept free of harmful bacteria by adding aqueous sodium chlorate(i),naocl. this reacts with water t

o produce hocl molecules which kill bacteria.ocl–(aq) h2o(reversible) oh–(aq) hocl (aq)in bright sunshine, the ocl– ion is broken down by ultra-violet lightocl–(aq) uv light → cl–(aq) ½o2(g)which method would maintain the highest concentration of hocl (aq)?a acidify the pool waterb add a solution of chloride ionsc add a solution of hydroxide ionsd bubble air through the water
Chemistry
1 answer:
antoniya [11.8K]2 years ago
4 0
The answer is chlorine
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Please help
inna [77]

From the calculation, the standard free energy of the system is -359kJ.

<h3>What is the standard free-energy?</h3>

The  standard free-energy is the energy present in the system. We have to first obtain the cell potential using the formula;

Ereduction - E oxidation = 0.96 V - 0.34 V = 0.62 V

Using the formula;

ΔG = -nFEcell

ΔG =-(6 * 96500 * 0.62)

ΔG =-359kJ

Learn more about free energy:brainly.com/question/15319033

#SPJ1

3 0
1 year ago
Calcula el pH de estas soluciones: A-acido sulfúrico 0,0013 m B- hidróxido de socio 1,7 . 10 (-3) C- hidróxido de bario 2,2 . 10
Vladimir [108]

Answer:

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4 0
2 years ago
How much CO2 is produced from the decomposition of 200g of CaCO3 if 112 of CaO are produced?
MArishka [77]
88 Grams because the principal of conservation of mass states total mass in equals total out so 200 in 122+88=200 out
6 0
3 years ago
True or False?<br><br> Density of ocean water is not affected by salinity (salt content).
Nastasia [14]

Answer:

false

Explanation:

8 0
3 years ago
Read 2 more answers
Investigations were carried out in a science lab to explore the topic of chemical and physical changes. Investigation A Step 1.
Angelina_Jolie [31]

Answer : B) In step 2, there was a chemical change which was observed in sugar.

Explanation : In A step 2 there was a physical change that was seen. By just boiling the dissolved salt solution salt was obtained. Therefore, it is a physical change. In B step 2 there was a chemical change seen as sugar solution was thickened and turned brown. It was not obtained in its original form; there was a chemical reaction that took place during sugar evaporation. As chemical change is the one where the reaction is irreversible.

Therefore only in B step 2 there was a chemical change that was observed.

4 0
3 years ago
Read 2 more answers
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