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Oksanka [162]
3 years ago
8

1. the purpose of the aqueous solutions in a galvanic cell is to?

Chemistry
1 answer:
ludmilkaskok [199]3 years ago
4 0

Answer:

1. The correct option is;

c. maintains charge balance in the cell

2. The correct option is;

c. +3.272 V

Explanation:

The aqueous solution in a galvanic cell is the electrolyte which is a ionic solution containing that permits the transfer of ions between the separated compartment of the galvanic cell such that the overall system is electrically neutral

Therefore, the aqueous solution maintains the charge balance in the cell

2. Here we have;

B₂ + 2e⁻ → 2B⁻ Ecell = 0.662 V

A⁺ + 1e⁻ → A Ecell = -1.305 V

Hence for the overall reaction, we have;

2A + B₂ → 2AB gives;

(0.662) - 2×(-1.305)  = +3.272 V.

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HClO4 acid solution has a concentration of 5 Molarity. Calculate the concentration of this solution in
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Answer:

1. Percentage by weight = 0.5023 = 50.23 %

2. molar fraction =0.153

Explanation:

We know that

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Lets assume that aqueous solution of HClO4  and the density of solution is equal to density of water.

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We know that

Mass = density x volume

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            m'=1000 g

1.

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2.

We know that

molar mass of water = 18 g/mol

mass of water in 1000 ml = 1000 - 502.3 g=497.9 g

So moles of water = 497.7 /18 mole

moles of water = 27.65 moles

So molar fraction = 5/(5+27.65)

molar fraction =0.153

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Answer:

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