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At equivalence the only species present will be NaCl(aq) & H2O(l)
The solution of a salt of a strong acid and a strong base will have a pH=7
NaCl(aq) will have a pH=7
A suitable indicator would be bromothymol blue (pH range 6.2 - 7.6) or phenol red (pH range 6.8 - 8.4)
Strong Acid - Weak Base titrationHCl(aq) + NH3(aq) -----> NH4Cl(aq)NH4Cl is the salt of a strong acid & a weak base, so a solution of NH4Cl will have a pH < 7 (NH4+ is a weak acid)
A suitable indicator would be methyl orange (pH range 3.1 - 4.4) or methyl red (pH range 4.4 - 6.0)
Weak Acid - Strong Base titrationCH3COOH(aq) + NaOH(aq) -----> CH3COONa(aq) + H2O(l)CH3COONa is the salt of a weak acid & a strong base, so a solution of CH3COONa will have a pH > 7 (CH3COO- is a weak base)
A suitable indicator would be phenolphthalein (pH range 8.3 - 10.0) or thymol blue (pH 8.0 - 9.6)
What else can I help you with?
How would the endpoint of a neutralization reaction be determined with the use of an indicator?
An indicator changes color at a specific pH range. To determine the endpoint of a neutralization reaction, an indicator that changes color near the neutral pH of 7 would be used. The reaction is stopped when the indicator changes color, indicating that the acid and base have been neutralized.
What does an universal indicator tell you about an acid that litmus doesn't?
Universal indicator gives you an indication of the pH of the acid (i.e its 'strength') While both sulfuric acid and vinegar would turn litmus paper red, sulfuric acid would turn universal indicator red, pH of 1, while vinegar would turn it yellow-orange, pH of 4.
A soap solution would test as a base with universal indicator paper?
Yes it would
What is acid base indicator?
An acid base indicator is a chemical substance that has the ability to change color depending on the pH.
What substance is used to determine the presence of an acid or base?
by using an indicator like litmus paper!!!
What is used to determine the pH of an acid or base?
indicator
Which color does a base change when mixed with hibiscus indicator?
A base will change the color of hibiscus indicator from red to green or blue, depending on the strength of the base.
What happens to the indicator when a base is added?
There are a huge range of indicators that can be used in chemistry, but I presume you'll be using the basic 'universal indicator' here. A base will turn this indicator (depending on its strength) light/dark blue, or purple if it is quite strong. Or do you mean in terms of chemical reaction?
Can universal indicator be used to determine the strength of acids and bases?
Yes, universal indicator can be used to determine the strength of acids and bases. It changes color over a range of pH values, allowing you to estimate whether a substance is an acid or a base and roughly how strong it is based on the color change. However, it is not as precise as using pH paper or a pH meter for accurate pH measurements.
Is phenolphthalein an indicator?
Yes, phenolphthalein is an indicator commonly used in acid-base titrations to determine the endpoint of the reaction.
How would the endpoint of a neutralization reaction be determined with the use of an indicator?
An indicator changes color at a specific pH range. To determine the endpoint of a neutralization reaction, an indicator that changes color near the neutral pH of 7 would be used. The reaction is stopped when the indicator changes color, indicating that the acid and base have been neutralized.
What indicator turns a variety of colors depending on the strength of the acid or base?
Litmus paper pH paper
What is phenolphtalen?
It is a chemical indicator that turns pink in base and used in qualitative chemical analysis to determine acid/base neutralisation point.
How do you know if an acid or base is strong or weak using litmus paper?
Litmus paper only indicates the presence of an acid or a base, not the strength. The color change to red indicates an acid, while blue indicates a base. To determine strength, you would need to use a pH indicator or perform a more thorough chemical analysis.
How can one determine the pH of a weak base?
To determine the pH of a weak base, you can use a pH meter or pH indicator paper. Alternatively, you can calculate the pH using the concentration of the weak base and its equilibrium constant.
What does an universal indicator tell you about an acid that litmus doesn't?
Universal indicator gives you an indication of the pH of the acid (i.e its 'strength') While both sulfuric acid and vinegar would turn litmus paper red, sulfuric acid would turn universal indicator red, pH of 1, while vinegar would turn it yellow-orange, pH of 4.
What is the base word for indicator?
Indicate is the base word for indicator.
