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arsen [322]
3 years ago
9

When 0.230 g of sodium metal is added to an excess of hydrochloric acid, 2390 J of heat are produced. What is the enthalpy of th

e reaction as written?
2Na(s)+2HCl(aq)⟶2NaCl(aq)+H2(g)
Chemistry
1 answer:
Dmitriy789 [7]3 years ago
3 0

Answer:

ΔHrxn = 239 kj/mol

Explanation:

Given data:

Mass of sodium = 0.230 g

Heat produced = 2390 J

Solution:

Chemical equation:

2Na + 2HCl → 2NaCl + H₂

Number of moles of sodium:

Number of moles of sodium = mass / molar mass

Number of moles of sodium = 0.230 g / 23 g/mol

Number of moles of sodium = 0.01 mol

Enthalpy of reaction:

ΔHrxn =  2390 J / 0.01 mol

ΔHrxn = 239000 j/mol

ΔHrxn = 239 kj/mol

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Explanation:

The given data is as follows.

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Formula to calculate the potential difference is as follows.

            V = \frac{B \times I/d}{n \times e
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3 years ago
What occurs in a chemical reaction?
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Answer:

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You shake a can of soda and open it, which cause the pressure to decrease. what happens to the volume of the CO2. the soda​
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3 years ago
How do you solve this ??
kotegsom [21]
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