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Oksana_A [137]
4 years ago
6

Explain what is wrong with this balanced chemical equation and write the correct equation.

Chemistry
1 answer:
WINSTONCH [101]4 years ago
3 0

Answer:

Zn(s)+ 2 HCl(aq)➡️ ZnCl2 (aq) + H2(g)

Explanation:

Your chemical equation can be simplified....

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Consider this equilibrium constant expression:
alex41 [277]
The answer would be: <span>D. Kb for HS–
</span>
Kb is the dissociation constant of an acid/base molecule. The word b in Kb is base, which means the formula should have an OH- ion inside it. Ka would be the opposite of Kb where the formula has H+ ion.
In this question, the formula is: [H2S][OH-]/ [HS-]
Since there are OH- ion. Since H2S is acid and HS- is base, I think it should be <span>Kb for HS–
</span>
3 0
4 years ago
Read 2 more answers
Which of the following statements is TRUE?
Karo-lina-s [1.5K]

Answer:

The correct option is E.

Explanation:

Average speed of the gas molecules = v_a

v_a=\sqrt{\frac{2RT}{M}}

T = Temperature of the gas molecule

M = molar mass of gas molecule

R = gas constant

v_a\propto \frac{1}{M}

Higher the molar mass of the molecule lesser will be the speed and vice versa.

Hence, statement A is not true.

Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

Larger the molar mass that larger the molecule lessor will be the effusion and vice versa.

Hence, statement B is not true.

According to Boyle's law, pressure of the gas is inversely proportional o the volume occupied by the gas at constant temperature. And same can also be observed from ideal gas law:

PV=nRT

P=\frac{nRT}{V}

P\propto \frac{1}{V}

Higher the pressure of the gas lower will be the volume occupied by the gas and vice versa.

Hence, statement C is not true.

With rise in temperature, effusion of gas molecule increase as kinetic energy of gas molecules increases in with increase in temperature.

Average kinetic energy is defined as the average of the kinetic energies of all the particles present in a system. It is determined by the equation:

K=\frac{3RT}{2N_A}

where,

K = Average kinetic energy

R = Gas constant

T = Temperature of the system

N_A = Avogadro's number

K\propto T

Higher the temperature more will be kinetic energy of gas molecule more easily it will effuse.

Hence, statement D is not true.

From this we can conclude that out of five statements first 4 statements are not true which means that none of these statements are true.

3 0
4 years ago
For the unbalanced reaction below, calculate how many grams of oxygen form when 2.72 g of potassium chlorate completely reacts.
Marianna [84]
The real answer is kci(s)-h2o
8 0
3 years ago
What is the pH of a 1.0 x 102 M solution of HNO,?
MAXImum [283]

1.0 times 102M is 100M

6 0
3 years ago
An element 'X after reacting with acids liberates hydrogen gas and candisplace lead and mercury from their salt solutions. The m
adell [148]

The element X is Copper.

Explanation :

Reactive metals from 3d transition series like Cu are very reactive because their standard reduction potential values are low.

Hence, when treated with a acid it tends to liberate hydrogen gas.

Also, because of  its low reduction potential value, it can easily displace lead and tin from their salt solutions.

Learn more :

https://brainly.in/question/6679934

5 0
3 years ago
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