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Lina20 [59]
3 years ago
5

Why phenolphthalein is used in experiment?

Chemistry
1 answer:
Dominik [7]3 years ago
4 0
In an acid-base titration, the neutralization reaction between the acid and base can be measured with either a color indicator or a pH meter. In this experiment, aphenolphthalein<span> color indicator will be </span>used<span>.
 </span>Phenolphthalein<span> is colorless in acidic solutions and pink in basic solutions.
Hope this helped 
: )</span>
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Is 2 KNO₃ + H₂CO₃ → K₂CO₃ + 4 HNO₃ a balanced equation
krok68 [10]

Hey there!

The elements in this equation are K, N, O, H, and C.

Let's count how many of each are on each side to see if it is balanced.

K: 2 on the left, 2 on the right.

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<em>O: 9 on the left, 6 on the right. </em>

<em>H: 2 on the left, 4 on the right. </em>

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Notice that there are different amounts of N, O, and H on the left side and the right side.

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6 0
3 years ago
What is the molarity of a solution made with 64 grams of sodium hydroxide in 4 liters of water
ehidna [41]

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The molarity of the solution: 0,27M

Explanation:

First , we calculate the weight of 1 mol of NaCl:

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A solution molar--> moles of solute in 1 L of solution:

4 L-----1,09 mol NaCl

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7 0
3 years ago
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