Answer:
Common Salt and Copper Sulfate forms a true solution.
Explanation:
True Solutions are those solutions in which the solutes are uniformly distributed throughout and forms a homogeneous mixture. In these solutions the solutes either exist in molecular form exist as ions. Like in given cases;
NaCl ₍s₎ → Na⁺ ₍aq₎ + Cl⁻ ₍aq₎
and,
CuSO₄ ₍s₎ → Cu²⁺ ₍aq₎ + SO₄²⁻ ₍aq₎
Also, the size of solutes in true solutions is less than 1 nm. Also, when allowed for longer time these ions in true solutions never settles down at the bottom. This formation of true solution by these two compounds is mainly due to their greater solubility in water. The ions formed have greater force of interactions with the molecules of eater.
Also, the sand fails to form the true solution because sand in insoluble in water. The force of attractions between the sand and water are smaller than the force of attractions between sand molecules. Thus, when added in water the sand particles precipitates out and settle down at the bottom.
Answer:
a. [HI]² / [I₂] . [H₂]
b. Kc = 46.9
c. This is an homogeneous reaction
Explanation:
The equilibrium is this:
H₂ (g) + I₂ (g) ⇄ 2HI (g)
Eq. 0.102M 0.00183M 0.0963M
The expression for Kc will be:
Kc = [HI]² / [I₂] . [H₂]
Kc = 0.0963² / 0.00183 . 0.102
Kc = 46.9
The reaction is homegeneous, because all the reactants and the product are at the same phase. In this case, as the reaction is homogeneous, the speed of reaction is not affected by the exposed surface area.
If it was an heteregeneous reaction, it would depend on the area of the surface exposed to the mixture of reaction. The heterogeneous reaction are in a different phase, for example a catalyst in a different phase as the reactants.
Answer:
<h2>0.041 M</h2>
Explanation:
The molarity of a solution when given the number of moles the substance and it's volume can be found by using the formula
n is the number of moles
v is the volume in L
We have
We have the final answer as
<h3>0.041 M</h3>
Hope this helps you
Answer:
Cellular division has three main functions: (1) the reproduction of an entire unicellular organism, (2) the growth and repair of tissues in multicellular animals, and (3) the formation of gametes (eggs and sperm) for sexual reproduction in multicellular animals.