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3 years ago

Predict the effect of an eightfold pressure increase on the equilibriunm composition of the reaction 3 Nalg) + H21g) =2 NaHlg)

2 answers:

6 0

According to Le cha telier's principle when we increase the pressure of a equilibrium reaction the reaction shift to the side where few moles of gas present.

Your reaction (Notice - I guess the reaction you written is wrong, but still I'm solving with your given prediction)

3NaI (g) + H2 (g) = 2NaHI (g)

Where access of sodium iodide is reacting with Hydrogen gas to form NaHI molecule.

Number of moles of gas on reaction side - 3+2 = 5 moles

Number of moles of gas on product side - 2 moles

Conclusion- the reaction will shift to the right of the reaction

Assoli18 [71]3 years ago

4 0

According to Le cha telier's principle when we increase the pressure of a equilibrium reaction the reaction shift to the side where few moles of gas present.

Your reaction (Notice - I guess the reaction you written is wrong, but still I'm solving with your given prediction)

3NaI (g) + H2 (g) = 2NaHI (g)

Where access of sodium iodide is reacting with Hydrogen gas to form NaHI molecule.

Number of moles of gas on reaction side - 3+2 = 5 moles

Number of moles of gas on product side - 2 moles

Conclusion- the reaction will shift to the right of the reaction

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If a lab requires each a lab group (3 students) to have 25 ml of a solution and it takes 15 grams of AgNO₃ cuprous nitrate, to m

pochemuha

Answer:

0.375 grams are needed to make 25 mL solution.

Explanation:

Mass of $AgNO_3$ cuprous nitrate required to make 1 l of solution = 15 g.

1 L = 1000 mL

Mass of $AgNO_3$ cuprous nitrate required to make 1000 mL of solution = 15 g

Mass of $AgNO_3$ cuprous nitrate required to make 1 mL of solution:

$=\frac{15}{1000} g$

Mass of $AgNO_3$ cuprous nitrate required to make 25 mL of solution:

$=\frac{15}{1000} \times 25 g=0.375 g$

0.375 grams are needed to make 25 mL solution.

4 0

3 years ago

List two possible steps where impurities may be gained, which would appear to be an increase in copper

Arisa [49]

Answer:

i) During washing

ii) During Measurement

Explanation:

The two possible steps are :

i) During washing : during the washing method the residue may be not completely dried out and this residue ( water) will add up to the final product ( copper yield ) and this kind of error is called human error.

ii) During measurement : If the weighing instrument is faulty there might be addition in value of the final copper yield which will see the final yield value > 100% . this error occurs when the initial value and final value is been weighed

8 0

3 years ago

Any zero in a measurement is always significant True Or False

weqwewe [10]

Answer:

False

Explanation:

A significant number is a number that is used to express the accuracy in a measurement. There are some rules that binds the identification of significant figures when reporting a scientific measurement.

All non-zero numbers are significant
Zeros in between two digits are significant.
Zeros to the right of the decimal are significant.
Leading zeros are just place holders and are not significant.
Trailing zero in a whole number with decimal is significant
Trailing zero without a decimal is not significant.

source: http://ccnmtl.columbia.edu/projects/mmt/frontiers/web/chapter_5/6665.html

We can see that not all zeros in a measurement is significant. For example, 540 has 2 significant numbers because the zero is not significant but 540.2 has 4 significant numbers.

3 0

2 years ago

What is the chemical formula of Titanium(2) oxide?

zimovet [89]

TiO2

since Ti has 2 valence e-
to O's 1

3 0

3 years ago

What type of reaction is the generic equation A + BC → AC + B

bazaltina [42]

Answer:

Explanation:

The reaction represented below

A + BC → AC + B

is a single displacement reaction. This type of reaction involves a free element reacting with a compound and replacing another element in the compound due to the fact that its more reactive than the element present in the compound.

In the reaction above A displaces element B from compound BC.

double displacement reaction involves the switch of ions in two compounds that react together. Option A is correct.

8 0

3 years ago

Predict the effect of an eightfold pressure increase on the equilibriunm composition of the reaction 3 Nalg) + H21g) =2 NaHlg)​

Predict the effect of an eightfold pressure increase on the equilibriunm composition of the reaction 3 Nalg) + H21g) =2 NaHlg)