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Eduardwww [97]
3 years ago
5

Write a net ionic equation for the overall reaction that occurs when aqueous solutions of phosphoric acid (h3po4) and potassium

hydroxide are combined.assume excess base. use the pull-down boxes to specify states such as (aq) or (s).
Chemistry
1 answer:
shusha [124]3 years ago
7 0
Firstly, we have to show molecular equation (all compounds are showed as neutral molecules) for the reaction:

H₃PO₄(aq) + 3KOH(aq)  ⇒ K₃PO₄(aq) + 3H₂O(l) 

Then, the reaction has to be written as an ionic equation:

3H⁺(aq) + PO₄³⁻(aq) + 3K⁺(aq)+ 3OH⁻(aq) +   ⇒  3K⁺(aq) + PO₄³⁻(aq)  + 3H₂O(l) 

The molecule of water does not dissociate and it is shown as a molecule. Soluble ionic compounds H₃PO₄ and KOH are shown as dissociated ions.
Since there are not spectator ions (ions that do not participate in the reaction) the equation is at the same time and net ionic equation (ions and molecules involved in the reaction).

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Use this condensed chemical structure
liberstina [14]

Answer:

number of carbon-carbon single (C - C) bonds: 1

number of carbon-hydrogen single (C H) bonds: 5

number of nitrogen-hydrogen sing le (N H) bonds:2

number of lone pairs: 1

Explanation:

Ethanamine is a colourless gas having a strong 'ammonia- like' odour. It contains the -NH2 group which makes it an amine. It contains one carbon-carbon bond, five carbon-hydrogen bonds and two nitrogen-hydrogen bonds.

Nitrogen, being sp3 hybridized in the compound has a lone pair of electrons localized on one of the sp3 hybridized orbitals of nitrogen while one sp3 hybridized orbital of nitrogen is used to form a carbon-nitrogen bond. The other two sp3 hybridized orbitals on nitrogen are used to form the two nitrogen-hydrogen bonds.

6 0
3 years ago
If an object is travelling 25.0 meters/second, how far will it travel in 45 minutes?
Misha Larkins [42]
  • Speed=25m/s
  • Time=45min=(45×60)s=2700s

\\ \rm\longmapsto Distance=Speed(Time)

\\ \rm\longmapsto Distance=25(2700)

\\ \rm\longmapsto Distance=67500m

4 0
3 years ago
Kinetic energy and gravitational potential energy are both forms of which type
scoundrel [369]

Answer:

<em>C. Potential energy</em>

Explanation:

Kinetic energy and gravitational potential energy are both forms of potential energy. Potential energy is stored energy, when an object is not in motion it has stored energy. When an object is an motion it has kinetic energy. An object posses gravitational potential energy when it is above or below the zero height.

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Help me outttttttttttt t t t. T t
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Answer:

the open bag allowed the gas from the reaction to escape

8 0
3 years ago
What is the value for (delta)G at 1000 K if (delta)H = -220 kJ/mol and (delta)S = -0.05 kJ/(molK)?
tankabanditka [31]
The system is isothermal, so we use the formula:
(delta)G = (delta)H - T (delta) S

Plugging in the given values:
(delta)G = -220 kJ/ mol - (1000K) (-0.05 kJ/mol K)
(delta)G = -170 kJ/mol

If we take a basis of 1 mol, the answer is
D. -170 kJ 
6 0
3 years ago
Read 2 more answers
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