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3 years ago

What can you add to a voltaic cell to make it into an electrolytic cell?

Chemistry

1 answer:

Firlakuza [10]3 years ago

7 0

Answer:

a cell or battery

Explanation:

this is because a voltaic cell is such a cell where chemical energy gets converted to electrical energy. the energy conversion in the case of an electrolytic cell is from electric to chemical (battery supplies electrons to the anode respectively). So, I feel by adding a cell or battery, we can change the way energy conversion takes place, thereby changing the process.

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What is the conecntration of Fe3 and the concentration of No3- present in the solution that result when 30.0 ml of 1.75M Fe(No3)

zvonat [6]

Answer:

$[Fe^{+3}]=0.700 M$

$[NO_{3}^{-}]=2.10 M$

Explanation:

Here, a solution of Fe(NO₃)₃ is diluted, as the total volume of the solution has increased. The formula for dilution of the compound is mathematically expressed as:

$C_{1}. V_{1}= C_{2}.V_{2}$

Here, C and V are the concentration and volume respectively. The numbers at the subscript denote the initial and final values. The concentration of Fe(NO₃)₃ is 1.75 M. As ferric nitrate dissociates completely in water, the initial concentration of ferric is also 1.75 M.

Solving for [Fe],

$[Fe^{+3}]=\frac{C_{1}.V_{1}}{V_{2} }$

$[Fe^{+3}]=\frac{(1.75).(30.0)}{45.0+30.0 }$

$[Fe^{+3}]=0.700 M$

For [NO₃⁻],

There are three moles of nitrate is 1 mole of Fe(NO₃)₃. This means that the initial concentration of nitrate ions will be three times the concentration of ferric nitrate i.e., it will be 5.25 M.

$[NO_{3}^{-}]=\frac{C_{1}.V_{1}}{V_{2} }$

$[NO_{3}^{-}]=\frac{(5.25)(30.0)}{30.0+45.0 }$

$[NO_{3}^{-}]=2.10 M$

7 0

3 years ago

Entalpy of vaporization of water is 41.1k/mol. if the vapor pressure of water at 373k is 101.3 kpa, what is the vapor pressure o

allsm [11]

Answer: The vapor pressure of water at 298 K is 3.565kPa.

Explanation:

The vapor pressure is determined by Clausius Clapeyron equation:

$ln(\frac{P_2}{P_1})=\frac{\Delta H_{vap}}{R}(\frac{1}{T_1}-\frac{1}{T_2})$

where,

$P_1$ = initial pressure at 298 K = ?

$P_2$ = final pressure at 373 K = 101.3 kPa

$\Delta H_{vap}$ = enthalpy of vaporisation = 41.1 kJ/mol = 41100 J/mol

R = gas constant = 8.314 J/mole.K

$T_1$ = initial temperature = 298 K

$T_2$ = final temperature = 373 K

Now put all the given values in this formula, we get

$\log (\frac{101.3}{P_1})=\frac{41100}{2.303\times 8.314J/mole.K}[\frac{1}{298K}-\frac{1}{373K}]$

$\frac{101.3}{P_1}=antilog(1.448)$

$P_1=3.565kPa$

Therefore, the vapor pressure of water at 298 K is 3.565kPa.

3 0

4 years ago

NO LINKS please help!

GarryVolchara [31]

Answer:

True True False

Explanation:

4 0

3 years ago

An acid

Leokris [45]

OPTION D IS YOUR ANSWER.............

6 0

3 years ago

A device that does work with only one movement and changes the size or direction of a force is a(n) ____.

worty [1.4K]

Answer:

A device that does work with only one movement and changes the size or direction of a force is a simple machine.

Explanation:

For applying force, any used basic mechanical devices are simple machines.
Simple machine changes the direction as well as the amplitude of the applied force i.e. we can increase or decrease the magnitude of the force.
A simple machine is the most basic mechanism to use the force as we need in big mechanical machines.
Some of the examples of simple machines are inclined plane, lever, wedge, wheel and axle, pulley, and screw.

6 0

3 years ago

What can you add to a voltaic cell to make it into an electrolytic cell?​

What can you add to a voltaic cell to make it into an electrolytic cell?