Engineering Chemistry Laboratory Viva voice questions and answers
6. Estimation of Copper Content of the given Solution by lodometry
Chemistry (Lab) Practical : Viva – voice questions & answers
Engineering Chemistry Laboratory : 6. Estimation of Copper Content of the given Solution by lodometry : Viva – voice questions & answers
VIVA – VOICE QUESTIONS & ANSWERS
6. Estimation of Copper Content of the given Solution by lodometry
1.
What is iodometric titration.
Iodometric
titration is the titration, where oxidising agents liberate iodine from KI and
the liberated iodine is titrated against std. reducing agent.
2.
Name some oxidising agents.
Acidified
KMnO4, K2Cr2O7, H2O2
3.
Why hypo is commonly used as a reducing agent.
Because
it is a primary standard.
4.
Which indicator is used in iodometry.
Starch
5.
Why is blue colour formed in the iodometric titration.
Iodine
forms a blue coloured complex with starch.
6.
Why is blue colour disappeared in the titration.
When
the iodine is removed from the starch, its colour gets disappeared
7.
What is the equivalent weight of copper.
63.54
8.
Why a burette with rubber tap should not be used in iodimetry?
Rubber
is attacked by iodine.
9.
Why iodine solution is stored in coloured bottles.
Light
makes the iodine to react with water.
Engineering Chemistry Laboratory Viva voice questions and answers : Tag: : Chemistry (Lab) Practical : Viva – voice questions & answers - 6. Estimation of Copper Content of the given Solution by lodometry
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