When KCl dissolves in water ________. a. the K+ ions are attracted to the partial negative charge on the oxygen atom of the water molecule b. the Cl- ions are attracted to the partial negative charge on the oxygen atom of the water molecule c. the K+ ions are attracted to Cl- ions on the KCl crystal d. the K+ ions are attracted to the partial positive charge on the hydrogen atoms of the water molecule e. the Cl- ions are attracted to dissolved K+ ions
Answers
Answer:
a. the K+ ions are attracted to the partial negative charge on the oxygen atom of the water molecule.
Explanation:
The hydrogen atoms on water are partially positive and the oxygen on water is partially negative.
Since unlike charges attract, the oxygen of the water molecules are attracted to the K+ and the hydrogens are attracted to Cl-. the water surrounds the k+ and cl- so that the unlike charges are allowed to be close together.
The proper response to KCl dissolving in water is e. the Cl- ions are attracted to dissolved K+ ions.
The ionic compound KCl separates into the ions K+ and Cl- when it is introduced to water. The partial negative charges on the oxygen atoms in the water molecules are what draw the positive K+ ions to them. At the same time, the partial positive charges on the hydrogen atoms of the water molecules draw the negative Cl- ions towards them. Ion-dipole interactions are the name for this attraction between ions and water molecules.
In the case of KCl, the dissolved K+ ions in the solution selectively attract the Cl- ions. Due to the polar nature of the individual ions, the water molecules form a hydration shell around them.
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Related Questions
Which are assumed to be constant while using the combined gas law?pressurenumber of molesvolume and moles of gaspressure and temperature
H2(g) + CO2(g) + 10 kcal H2O(g) + CO(g)In another experiment involving the above reaction at 1,000°C, the equilibrium concentrations were found to be: H2(g) = 2.0 moles per liter H2O(g) = 4.0 moles per liter CO2(g) = 5.0 moles per liter CO(g) = 4.0 moles per liter What is the equilibrium constant, Keq, for this reaction?
What does N2O3 mean in science
Match the following definition to the type of solution it describes. unsaturated solution saturated solution supersaturated solution A. The amount of solute dissolved is less that the maximum amount the solution can hold. B. The amount of solute dissolved is the maximum amount the solution can hold. C. The amount of solute dissolved is more than the usual maximum amount.
Answers
So:
160g ---------- 6·10²³molecules
79g ---------- x
x = 2.9625·10²³ molecules
1molecule = 5 atoms
2.9625·10²³ molecules = 2.9625·10²³·5 = 14.8125·10²³ atoms
B) look for presence or absence of wisdom teeth
C) multiply the internal distance in centimeters between the coronoid processes by the external distance in centimeters between the jaw angles(mandibular angles)
D) look for shovel shaped incisors
(It's not C)
Answers
Answer:
B) look for presence or absence of wisdom teeth
Explanation:
The only way to make a reliable guess if a victim was under 17 years old is by looking if he already had the wisdom teeth, this teeth are located in the back of the mouth, and are the third molars that humans develop after the age of 17 or 18 years on average, some could develop them after.
Answers
P has 5 valence electrons
O has 6 valence electrons (each for 4 oxygen)
And finally, for every negative charge, there is an additional valence electron
We should add these all up = 5 + 24 + 3 = 32 valence electrons
With this, we can be guided to illustrate the lewis structure as P as central atom and the 3 oxygen each with a single bond with P and 1 oxygen with a double bond with P. We place the valence electrons until octet rule is satisfied,
we will be left with 12 lone pairs for phosphate ion.
Answers
Answer:
potassium and sodium
Explanation:
There are many metals that can react with aluminium nitrate in a displacement reaction. these metals are higher than aluminium in the electrochemical series of elements where metals are arranged based on their reactivity and therefore tend to displace aluminium in any chemical reaction. However the most reactive of these metals are potassium(K) and sodium(Na). Others are calcium(Ca), magnesium(Mg), lithium(Li), strontium (Sr).
Answers
Answer:
Chemical properties,
Explanation:
Let us understand all the given terms
a) catalyst properties: this is the property of a substance by virtue of which it helps to modulate the rate of reaction, and itself remains unconsumed during the reaction (does not react). Example : enzymes
b) chemical properties: this is the property of a substance by virtue of which it reacts with another substance to give a new product of different structure, bonding, chemical and physical properties.
Example : hydrogen reacts with oxygen to give water.
So here the hydrogen is undergoing reaction with oxygen and this is chemical property of hydrogen.
c) Physical properties: This is the property which is related to the nature of a substance to exit in nature. for example hydrogen is a gas is its physical property not chemical.
d) mineral properties: It is again a kind of physical property.
Answers
The properties of different states of matter is explained by the kinetic theory of matter. The kinetic theory states that the higher the temperature, the faster the movement of the molecules.
What is kinetic theory?
The kinetic theory of matter states that the matter is made up of the particles which are always in motion. All the particles should have energy and the energy of the particle is determined by the temperature which effect the substance that exists in solid, liquid or gas.
The average speed and kinetic energy of the gas molecules increases with the increase in temperature. The higher speed of the molecules causes the more forceful and frequent collisions to occur. The random motion of the molecules is caused by the increase in temperature.
The actual average speed of the particles depends on their mass as well as the temperature. The heavier particles move slowly and the lighter ones move faster.
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