3 years ago

How many grams of Cl2 will be produced along with 250.0 kJ of heat in the following reaction? PCl5(g) + 87.9 kJ PCl3(g) + Cl2(g)

Chemistry

2 answers:

Serjik [45]3 years ago

5 0

As per the given chemical equation, 1 mole of Cl₂ is formed when 87.9 kJ of heat is absorbed.

Therefore, 250.0 kJ of heat will yield

\frac{1 mol Cl2}{87.9 kJ } \\ x 250.0 kJ = 2.84 mol Cl₂

Molar mass of mol Cl₂ = 71 g /mol

Mass of Cl₂ =2.84 mol Cl₂ x 71 g /mol = 201.64 g

201.64 g of Cl₂ will be produced along with 250.0 kJ of heat in the given reaction.

AfilCa [17]3 years ago

3 0

250 kJ/87.9 KJ per mole Cl2 * 71g/mole= 202 g It is D for plato users

You might be interested in

At a temperature of 393 K, the pressure of a sample of nitrogen is 1.07 atm. What will the pressure be at a temperature of 478 K

Rainbow [258]

Answer:

1.30atm

Explanation:

P1/T1 = P2/T2

1.07/393 = P2/478

6 0

4 years ago

A negative △H means an exothermic reaction.<br><br> True<br> False

Nostrana [21]

Your answer is False I think

6 0

4 years ago

Question

fredd [130]

Answer:

Explanation:

heavier particles, which are the ones that move slowly than the lighter particles have a higher temperature

plz mark as the brainliest

7 0

3 years ago

What is the wavelength of a light wave with a frequency of 2.5 × 1014 Hz? A. 7.5 × 10-6 m B. 1.2 × 10-6 m C. 1.2 × 10-5 m D. 8.3

Likurg_2 [28]

Answer:

The right option is B

Explanation:

The frequency of the wave is given by the following formula:

$f = \dfrac{c}{\lambda}$

where,

f = frequency of the wave.

c = speed of the light.

λ = wavelength of the light.

$\lambda = \dfrac{c}{f}$

$\lambda = \dfrac{3\times10^{8}}{2.5\times10^{14}}$

$\lambda = 1.2 \times 10^{-6}$

Therefore the correct option is B.

5 0

3 years ago

Complete this equation for the dissociation of na2co3(aq). omit water from the equation because it is understood to be present.

Savatey [412]

Net overall dissociation:
Na2CO3 ---> 2Na(-) + CO3(2-)

*The ion charge is in parenthesis

6 0

3 years ago

Read 2 more answers