Answer:
Conducts electricity
Explanation:
an acid or base which strongly conducts electricity contains a large number of ions and is called a strong acid or base and an acid or base which conducts electricity only weakly contains a few ions and his called a weaker acid base
The element that less mass in period two is Beryllium.
Answer:
1. C+ ---- O-
2. O+ ---- Cl-
3. O+ ----- F-
4. C+ ----- N-
5. Cl- ----- C+
6. S- ----- H+
7. S+ ----- Cl -
Explanation:
Electronegativity determines the polarity . There may be two atoms in a bond with high electronegativity, in such cases the positive charge is given to atom with comparatively lower electronegativity. Electronegativity determines the easiness with which an atom attract electrons in a chemical bond. A polar bond is formed when the difference in the electronegativity of two combining atoms is between 0.4 and 1.7. The correct direction is
1. C+ ---- O-
2. O+ ---- Cl-
3. O+ ----- F-
4. C+ ----- N-
5. Cl- ----- C+
6. S- ----- H+
7. S+ ----- Cl -
Answer:
The net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide is -470.4 kJ/mol.
Explanation:
Step 1 : Calcium carbide and water react to form acetylene and calcium hydroxide
![CaC_2(s)+2H_2O(g)\rightarrow](https://tex.z-dn.net/?f=CaC_2%28s%29%2B2H_2O%28g%29%5Crightarrow%20)
..[1]
Step 2 : Acetylene, carbon dioxide and water react to form acrylic acid
..[2]
Using Hess's law:
[1] × 6 + [2]
![6CaC_2(s)+16H_2O(g)+3CO_2\rightarrow 5CH_2CHCOOH(g)+6Ca(OH)_2(s),\Delta H_3=?](https://tex.z-dn.net/?f=%206CaC_2%28s%29%2B16H_2O%28g%29%2B3CO_2%5Crightarrow%205CH_2CHCOOH%28g%29%2B6Ca%28OH%29_2%28s%29%2C%5CDelta%20H_3%3D%3F)
![\Delta H_3=6\times \Delta H_1+\Delta H_2](https://tex.z-dn.net/?f=%5CDelta%20H_3%3D6%5Ctimes%20%5CDelta%20H_1%2B%5CDelta%20H_2)
![\Delta H_3=6\times (-414 kJ)+132 kJ=-2352 kJ](https://tex.z-dn.net/?f=%5CDelta%20H_3%3D6%5Ctimes%20%28-414%20kJ%29%2B132%20kJ%3D-2352%20kJ)
The energy released on formation of 5 moles of acrylic acid = -2352 kJ
The energy released on formation of 1 moles of acrylic acid :
![=\frac{-2352 kJ}{5 mol}=-470.4 kJ/mol](https://tex.z-dn.net/?f=%3D%5Cfrac%7B-2352%20kJ%7D%7B5%20mol%7D%3D-470.4%20kJ%2Fmol)
Hence, the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide is -470.4 kJ/mol.
The conjugate base of ch3ch2co2h or propanoic acid would be CH3CH2COO- or propanoate. The conjugate base is what is left after an acid has donated a proton in a reaction. Hope this answers the question. Have a nice day.