How do you explain the relatively high conductivity of tap water compared to a low or zero conductivity for distilled water?

2 answers:

4 0

Tap water contains many dissolved ions that are required to carry an electric current, whilst distilled water contains no or relatively low amounts of dissolved ions. the absence of ions in the distilled water accounts for the low to zero conductivity of the water

hope that helps!

Alona [7]2 years ago

3 0

Answer:

It is explained by the dissolved salts that the tap water possesses and therefore contains ions in solution capable of transmitting the electric current

Explanation:

The conductivity of a substance is defined as "the ability or power to conduct or transmit heat, electricity or sound." The units are Siemens per meter [S / m] in SI measurement system and micromhos per centimeter [mmho / cm] in standard US units. Its symbol is k or s.

The electric current results from the movement of electrically charged particles and in response to the forces acting on these particles due to an applied electric field. Within most solids there is an electron flow that causes a current, and this electron flow is called electronic conduction. Electronic conduction is generated in all conductors, semiconductors and in most isolated materials; The electrical conductivity depends largely on the number of electrons available to participate in the conduction process. Most metals are good conductors of electricity, due to the large number of free electrons that can be excited in an empty and available state of energy.

In the water and ionic materials or fluids the movement of a network of charged ions can be generated. This process produces electrical current and is called ionic conduction.

The electrical conductivity is defined as the radius between the current density (J) and the electric intensity of the field (e) and is opposite to the resistivity (r, [W * m]):

s = J / e = 1 / r

Pure water is not a good conductor of electricity. Ordinary distilled water in equilibrium with carbon dioxide in the air has a conductivity of approximately 10 x 10-6 W-1 * m-1 (20 dS / m). Because the electric current is transported by means of ions in solution, the conductivity increases when the ion concentration increases. In such a way, that conductivity when water dissolves ionic compounds.

Conductivity in different types of waters:

Ultra Pure Water 5.5 x 10^-6 S / m

Drinking water 0.005 - 0.05 S / m

Sea water 5 S / m

You might be interested in

calculate the number of moles of gas that occupy a 3.45L container at a pressure of 1.48 atm and a temperature of 45.6 Celsius

Otrada [13]

Answer:

There are 0,2 moles of gas that ocuppy the container.

Explanation:

We apply the formula of the ideal gases, we clear n (number of moles); we use the ideal gas constant R = 0.082 l atm / K mol. Firs we convert the unit of temperature in Celsius into Kelvin:

0°C= 273 K ------> 45,6 °C= 273 + 45, 6= 318, 6 K

PV= nRT ---> n= PV/RT

n= 1,48 atm x 3,45 L /0.082 l atm / K mol x 318,6 K

n= 0,195443479 mol

8 0

2 years ago

Which type of seismic waves produces the most severe ground movement?

Leto [7]

The surface waves are the type of seismic waves that produce the most severe ground movement. This wave is slow in nature and so produces a rolling effect similar to a surface wave in a pond. This kind of wave is far more devastating than the P waves and the S waves. The surface waves have the capacity to shake a building from side to side until it collapses. This kind of wave moves in a pattern similar to a circle. It actually originates at a point and then start moving outwards in a circle.

8 0

3 years ago

29. A gas has a volume of 1.75 L at -23°C and 150.0 kPa.

arsen [322]

The answer for the following mention bellow.