What is the first step in making a salt from a soluble base and an acid?

Chemical Reactions and Laboratory Procedures

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Chemistry
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9th - 10th Grade
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Hard

Patricia Brown
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Adding an indicator
Mixing the acid and base directly
Heating the solution
Measuring the exact quantity of the alkaline
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to wear goggles during the experiment?
To avoid splashes from the corrosive alkaline
To prevent eye strain
To enhance visibility
To protect from harmful fumes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using a volumetric pipet in the experiment?
To add the indicator
To heat the solution
To measure an exact volume of the alkaline
To mix the acid and base
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What color does phenolphthalein turn in an alkaline solution?
Colorless
Bright pink
Green
Blue
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much acid was required to neutralize the alkaline in the first experiment?
10.5 cm cubed
11.8 cm cubed
12.0 cm cubed
11.0 cm cubed
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the experiment repeated without the indicator?
To avoid contamination of the salt
To use less acid
To save time
To change the color of the solution
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the balanced chemical equation for the reaction?
H2O + NaCl → HCl + NaOH
HCl + NaOH → NaOH + H2O
NaCl + H2O → HCl + NaOH
HCl + NaOH → NaCl + H2O
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