CHEMISTRY HIGH SCHOOL

Ammonium hydroxide ionizes as follows: NH4OH(s) NH4 +(aq) + OH-(aq). If an excess of ammonium salt, such as NH4Cl (which ionizes to give NH4 +(aq) ions) is added to the equilibrium shown above, you could predict that the result will be to....

Answers

Answer 1
Answer:

Answer:

Concentration of OH- ions will be lowered

Explanation:

NH4OH is a weak electrolyte whereas NH4Cl is a strong electrolyte. The ionization can be depicted as follows:

NH4OH ↔ NH4+ + OH-

NH4Cl → NH4+ + Cl-

Addition of NH4Cl to NH4OH introduces a common ion i.e. NH4+.

The presence of a common ion supplied by a strong electrolyte will suppress the ionization of the weak electrolyte, this is called common ion effect.

In this case, the ionization of NH4OH will be suppressed which will lower the concentration of OH- ions.
Answer 2
Answer: Decrease the concentration of OH-

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During an experiment, Mr. Lehman tells his students to be alert for signs that an endothermic reaction is happening. Which of the following scenarios would his students most likely observe?

Answers

The correct answer for the question that is being presented above is this one: "A test tube becomes cool to the touch." During an experiment, Mr. Lehman tells his students to be alert for signs that an endothermic reaction is happening. The student will most likely observed that the test tube becomes cool to the touch.

Answer:

these are the choices

Explanation:

1 A test tube becomes cool to the touch.

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Match the landform to its description.caldera
made of pieces of lava
volcanic soil
material fills in valleys
cinder cone
bowl-shaped depression
shield volcano
wide summit, gentle slope
lava plateau
rich in nutrients

Answers

Answer:

cinder cone: made of pieces of lava

shield volcano: wide summit, gentle slope

volcanic soil: rich in nutrients

caldera: bowl shaped depression

lava plateau: material fills in valleys

Explanation:

it’s right

Answer:

Caldera, Bowl-Shaped depression

Shield volcano, Wide summit, Gentle slope

Lava plateau, Material fills in valleys

Volcanic soil, Rich nutrients

Cinder Cone, Made of pieces of lava

Explanation:

Got it right on edge

Ight I just here’s my first one

Answers

Answer:

D

Explanation:

What type of weathering will occur more rapidly in an area with extremely cold winters and hot summers?

Answers

Answer:

mechanical weathering through the process of ice wedging

Explanation:

Answer:

In cold climates, the freezing and thawing that occurs causes rapid mechanical weathering through the process of ice wedging. In warmer climates, chemical weathering is more rapid because the chemical reactions that dissolve rocks and minerals are accelerated by warm temperatures.

Explanation:

:)

As the activation energy of a reaction decreases, the number of molecules with at least this much energy ______________.

Answers

Answer:

Increasing

Explanation:

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Answers

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