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sveta [45]
3 years ago
10

Consider the reaction below. C2H4(g) + H2(g) to C2H6(g) Which change would likely cause the greatest increase in the rate of the

reaction?
a decrease temperature and decrease pressure
b increase temperature and decrease pressure
c decrease temperature and increase pressure
d increase temperature and increase pressure
Chemistry
2 answers:
mr_godi [17]3 years ago
6 0

Answer: Option (d) is the correct answer.

Explanation:

In the given reaction, C_{2}H_{4}(g) + H_{2}(g) \rightarrow C_{2}H_{6}(g) greatest increase in rate of reaction only occur when we increase the temperature and also increase the pressure.

This is because increase in pressure will bring the molecules closer to each other whereas increase in temperature will help in more number of collisions between reactant molecules.

Thus, this will lead to increase in formation of products. Hence, we can conclude that rate of reaction will increase with increase in temperature and increase in pressure.

algol [13]3 years ago
4 0
D. Increase temperature and increase pressure
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A 17.9 mL sample of a 0.445 M aqueous hypochlorous acid solution is titrated with a 0.374 M aqueous sodium hydroxide solution. W
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Answer:

the pH at the start of the titration is 3

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Salinity is a measure of which of the following in water?
Lemur [1.5K]
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8 0
3 years ago
Read 2 more answers
The empirical formula is:
Hunter-Best [27]

Answer:

C. the relative number of atoms of each element, using the lowest whole ratio.

Explanation:

The empirical formula is how we simplify the whole formula to simplify it to its smallest indivisible parts.

It is definitely not the actual number of atoms. If you see an empirical formula, don't think that it's the full thing.

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5 0
2 years ago
The Ksp can be used to find the concentration of hydroxide ions, and thus determine the pH given a concentration of of aluminum.
Anton [14]

Answer:

3.9.

Explanation:

(Molar mass of 342.15 g/mol).

The first thing to do in this question is to coverts our units. We are given 6.70 lb = 453.592 × 6.70 lb = 3039.0664 g of aluminum sulfate.

2050 gallons of water = 2050 × 3.785 = 7759.25 Litres.

After this we will now look for the Concentration aluminum sulfate using the formula below:

Concentration = number of moles ÷ volume. ------------------------------------(1).

Recall; Number of moles = 3039.0664/ 342.15 = 8.8823 moles. The volume = 2050 gallons = 7759.25 Litres.

Therefore, slotting in the values of of number of moles and volume into the equation (1) above, we have;

Concentration= 8.8823 moles/ 7759.25 Litres. = 0.001145 M.

The next equation we are going to make use of today is that of the solubilty product that is;

Ksp = (Al^3+) (OH^-)^3.

So, we have the ksp = 1.3 × 10^-33 and the value of (Al^3+)= 0.001145 M.

Hence, making (OH^-) the subject of the formula;

(OH^-) = ( 1.3 × 10^-33 / 0.001145)^1/3.

(OH^-) = 8 × 10^-11 M.

Hence, pOH = - log (OH^-)

pOH = - log (8 × 10^-11).

pOH = 10.1

Therefore, the values of pH is; 1

pH + pOH = 14.

pH = 14 - 10.1 = 3.9.

3 0
3 years ago
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