The chemical equation S + 02 - S02 is an example of which type of reaction?

Chloroacetic acid, HC2H2O2Cl, is a stronger monoprotic acid than acetic acid. In a .10M solution, the pH is 1.96

Nuetrik [128]

Hello

Explanation:

well I don't know if I can answer you well but I try .... I think it's HC2H202Cl... Thank you for your attention ✌️

8 0

3 years ago

Suppose that you add 26.7 g of an unknown molecular compound to 0.250 kg of benzene, which has a K f of 5.12 oC/m. With the adde

nadya68 [22]

Answer: The molar mass of the unknown compound is 200 g/mol

Explanation:

Depression in freezing point is given by:

$\Delta T_f=i\times K_f\times m$

$\Delta T_f=2.74^0C$ = Depression in freezing point

i= vant hoff factor = 1 (for molecular compound)

$K_f$ = freezing point constant = $5.12^0C/m$

m= molality

$\Delta T_f=i\times K_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}\times \text{weight of solvent in kg}}$

Weight of solvent (benzene)= 0.250 kg

Molar mass of solute = M g/mol

Mass of solute = 26.7 g

$2.74^0C=1\times 5.12\times \frac{26.7g}{Mg/mol\times 0.250kg}$

$M=200g/mol$

Thus the molar mass of the unknown compound is 200 g/mol

4 0

4 years ago

Is this molecule polar? NaS

Anuta_ua [19.1K]

Answer:

NaS is ionic compounds that's why it is polar.

Explanation:

Ionic bond:

It is the bond which is formed by the transfer of electron from one atom to the atom of another element.

Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.

For example:

Sodium sulfide is ionic compound. The electronegativity of sulfur is 2.58 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the sulfur. Sodium becomes positive and sulfur becomes negative ion. There are electrostatic fores present between bonded atoms and molecule becomes polar.

8 0

4 years ago

A small crystal of the slightly soluble salt, CaSO4, dissolves in a solution of calcium sulfate. The original solution must have

xz_007 [3.2K]

It has to be dilute since the crystal dissolved and unsaturated for the same reason so B

3 0

3 years ago

Read 2 more answers

When doing a recrystallization what observations would prompt

Volgvan

<h2>Observation of purified crystals.</h2>

Explanation:

Recrystallization is the process in which a compound is dissolved in a hot solvent and then allowed to cool which forms the crystals.
It is a technique used for purification of solids.
Recrystallization mainly depends on the solubility of the solvent that means the solid should be soluble in the solvent when it is hot and should be insoluble in the same solvent when it is cool.
The observations while doing recrystallization is to observe the purified crystals obtained and to filter it out.

5 0

3 years ago