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gregori [183]
3 years ago
13

Describe two techniques used to measure the PH of a solution

Chemistry
2 answers:
natali 33 [55]3 years ago
8 0

Answer:

ph paper, or a ph meter

Explanation:

lord [1]3 years ago
3 0

Answer:

Measure H+ concentration or measure OH- concentration

Explanation:

Since pH is basically the number of H+ ions in a solution, that's what you're trying to find. (it's actually -log of H+, which is irrelevant since this is a conceptual question). You can do this with a variety of chemicals.

And p,OH is always 14-pH. So you can also use the number of OH- ions to find p,OH, which can find pH.

hope this helps

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Explanation:

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3 years ago
Calculate the mass of nitrogen dissolved at room temperature in an 95.0 LL home aquarium. Assume a total pressure of 1.0 atmatm
harina [27]

Answer:

86.3 g  of N₂ are in the room

Explanation:

First of all we need the pressure from the N₂ in order to apply the Ideal Gases Law and determine, the moles of gas that are contained in the room.

We apply the mole fraction:

Mole fraction N₂ = N₂ pressure / Total pressure

0.78 . 1 atm = 0.78 atm → N₂ pressure

Room temperature → 20°C → 20°C + 273 = 293K

Let's replace data: 0.78 atm . 95L = n . 0.082 . 293K

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3 years ago
A chunk of zinc is added to a solution of gold (III) nitrate to extract the gold. The reaction forms,
alina1380 [7]

Answer:

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Explanation:

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it's a single displacement reaction,

here's the balanced equation for above reaction :

3 Zn + 2 Au(NO3)3 =》3 Zn(NO3)2 + 2 Au

7 0
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