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Define enthalpy of neutralisation. Why is its value constant for strong acid-strong base
neutralisation? Why is its value different if a weak acid is used in place of the strong acid
The enthalpy of neutralisation is the change in enthalpy that occurs when an acid and base undergo a neutralisation reaction to form one mole of water in natural states. Its...
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In titration, the experimentally determined stoichiometric point of the titration is referred to as--------------.
Flash point
Critical point
Equivalence point
stop point
In titration, the experimentally determined stoichiometric point of the titration is referred to as equivalence point. Equivalence point is the theoretical completion of the reaction: the volume of added titrant...
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Theindicator for the acid- base titration in which the pH of solution end-point is 5-6 is ___________.
any indicator
phenolphthalein
methyl orange
no suitable indicator
methyl orange
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1.) For each of the following, indicate whether it is a:
1. Strong acid, 2. Weak acid, 3. Weak base, 4. Strong Base
A. HCl
B. acetic acid
C. Iactic acid
D. H2SO4
E. Ca(OH)2
A. HCl - strong acid; B. Acetic acid - weak acid; C. Lactic acid - weak acid; D. H2SO4 - strong acid; E. Ca(OH)2 - strong base.
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What is the concentration of NaCl in a solution, if titration of 15.00mL of the solution with 0.257 M AgNO3 needs 20.22 mL of the AgNO3 solution to reach the end point?
Answer: 0.346 M
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Why do you have to warm oxalate ions before performing a titration? How is the end point of this titration determined?
Oxalic acid is heated before titration with KMnO4 solution because this reaction happens only in certain temperature. Redox Titrations Reduction of purple permanganate ion to the colorless Mn+2 ion, the solution...
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Consider the reaction of sodium hypochlorite with iodine.
What is the role of starch in this titration? Why is it added near the end point of the titration, and not at the beginning?
Starch is now used as an indicator for the presence of iodine. ... As to why it is added near the end of the titration rather than at the beginning is because the starch-iodine complex at high I2...
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hno3 isit a strong acid weak acid strong base weak base
Solution:Nitric acid or HNO3 is a strong acid
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Which of these indicators is most appropriate for determining the end point of a titration involving a strong base, such as sodium hydroxide? Methyl orange. Phenolphthalein. Universal. Litmus.
Answer: Phenolphthaleine(Because it changes colour at pH>7. It is most suitable for strong base titration)
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What are the similarities and differences between strong and weak acids?
Both strong and weak acids.....
Only strong acids.....
Only weak acids.....
Both strong and weak acids are ionized in aqueous solutions, depending on their strength. Strong acids only ionize almost completely in water; hence, nearly all the H+ ions are released.Weak...
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