Question
What happens when Cu2+ is added KI solution? Indicator used in this titration?
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Answer
$2\text{Cu}^{2+}+4\text{I}^-\text{(aq)}\xrightarrow{ \ \ \ \ \ }\text{Cu}_2\text{I}_2\text{(s)}+\text{I}_2\text{(aq)}$
Starch is used as indicator which gives blue colour with I2.
Starch is used as indicator which gives blue colour with I2.
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Similar questions
$\text{E}^\circ_\frac{\text{Zn}^{2+}}{\text{Zn}}=-0.76\text{V}$
$\text{E}^\circ_\frac{\text{Cr}^{2+}}{\text{Cr}}=-0.74$
$\text{E}^\circ_\frac{\text{H}^+}{\text{H}_2}=0$
$\text{E}^\circ_\frac{\text{Fe}^{3+}}{\text{Fe}^{3+}}=0.77\text{V}$
Which is the strongest oxidising agent out of them?
→$\text{E}^\circ_\frac{\text{Cr}^{2+}}{\text{Cr}}=-0.74$
$\text{E}^\circ_\frac{\text{H}^+}{\text{H}_2}=0$
$\text{E}^\circ_\frac{\text{Fe}^{3+}}{\text{Fe}^{3+}}=0.77\text{V}$
Which is the strongest oxidising agent out of them?
In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
Reason: Heat capacity is an extensive property and It depends upon the size of the body.
- Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- Assertion is true but Reason is false.
- Both Assertion and Reason are false.
Reason: Heat capacity is an extensive property and It depends upon the size of the body.
Which hybrid orbitals are used by carbon atoms in the following molecules?
CH3 –CH=CH2;
CH3 –CH=CH2;
The reaction:
CH3CH2I + KOH(aq) → CH3CH2OH + Kl
is classified as:
CH3CH2I + KOH(aq) → CH3CH2OH + Kl
is classified as:
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- Nucleophilic substitution.
- Elimination.
- Addition.
Explain why the uncertainty principle is significant only for the motion of sub-atomic particles but is negligible for the macroscopic objects?
Among the following pairs of orbitals which orbital will experience the larger effective nuclear charge? (i) 2s and 3s, (ii) 4d and 4f, (iii) 3d and 3p.
Arrange $\text{F}_2,\text{Cl}_2,\text{Br}_2,\text{I}_2$ in increasing order of bond dissociation enthalpy?
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Using s, p, d notations, describe the orbital with the following quantum numbers.
n = 4; l = 3.
n = 4; l = 3.