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3 years ago

Is the quantity of heat needed to

Chemistry

1 answer:

boyakko [2]3 years ago

6 0

D. Heat of vaporization, because the liquid is turning into a gas phase (vapor)

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2. a) Balance the equation: _NaOH + _Cl2 → NaOCl + NaCl + H2O

Gre4nikov [31]

Answer: 2NaOH+Cl₂=NaClO+NaCl+H₂O

Explanation:

3 0

4 years ago

From the following data, calculate the average bond enthalpy for the NOH bond: NH3(g) ¡NH2(g) 1 H(g) ¢H° 5 435 kJ/mol NH2(g) ¡NH

Sphinxa [80]

Answer:

The average bond enthalpy for the N-H bond is 392 kJ/mol.

Explanation:

$NH_3(g) \rightarrow NH_2(g) +1 H(g),\Delta H^o_{1}= 435 kJ/mol$ ..[1]

$NH_2(g) \rightarrow NH(g) + H(g),\Delta H^o_{2}= 381 kJ/mol$ ..[2]

$NH(g) \rightarrow N(g)+ 1 H(g),\Delta H^o_{3}= 360 kJ/mol$ ..[3]

On adding [1] , [2] and [3] , we get:

$NH_3(g) \rightarrow N(g) +3H(g),\Delta H^o_{4}= ?$

$\Delta H^o_{4}=\Delta H^o_{1}+\Delta H^o_{2}+\Delta H^o_{3}$

$= 435 kJ/mol+381 kJ/mol +360 kJ/mol = 1,176 kJ/mol$

There three bonds N-H bond sin ammonia. Then average bond enthalpy of single N-H bond is :

$\Delta H^o_{N-H}=\frac{1,176 kJ/mol}{3}=392 kJ/mol$

The average bond enthalpy for the N-H bond is 392 kJ/mol.

4 0

3 years ago

Why can non polar covalent compounds dissolve in alcohol?

aleksklad [387]

Answer:

Non-polar solvents cannot dissolve polar compounds since no opposite charges exist and the polar compound is not attracted.

Explanation: birb smorts

7 0

2 years ago

Read 2 more answers

(b) Once the ionic solid has dissolved, the anion that is formed is able to react as a base, with water as the acid. Write the n

Marrrta [24]

Answer:

b C₂H₃O₂⁻ + H₂O ⇄ HC₂H₃O₂ + OH⁻

e HC₂H₃O₂ + H₂O ⇄ H₃O⁺ + C₂H₃O₂⁻

f ka<<1

g. Weak acid molecules and water molecules

Explanation:

The water molecule could act as a base and as an acid, a molecule that have this property is called as amphoteric.

b The salt NaC₂H₃O₂ is dissolved in water as Na⁺ and C₂H₃O₂⁻. The reaction of the anion with water is:

C₂H₃O₂⁻ + H₂O ⇄ HC₂H₃O₂ + OH⁻

Where the C₂H₃O₂⁻ is the base and water is the acid.

e. The reaction of HC₂H₃O₂ (acid) with water (base), produce:

HC₂H₃O₂ + H₂O ⇄ H₃O⁺ + C₂H₃O₂⁻

f. As the acetic acid (HC₂H₃O₂) is a week acid, the dissociation in C₂H₃O₂⁻ is not complete, that means that ka<<1

g. The ka for this reaction is 1,8x10⁻⁵, that means that there are more weak acid molecules (HC₂H₃O₂) than conjugate base ions. Also, the water molecules will be in higher proportion than hydronium ions.

I hope it helps!

4 0

3 years ago

Which type of cell is larger

Karo-lina-s [1.5K]

Answer: eukaryotic cell

5 0

3 years ago