Why potassium iodide is used in arsenic limit test

Asked by admin @ 23/08/2021 in Chemistry viewed by 305 People

Answered by admin @ 23/08/2021

Answer:

Limit test of Arsenic is based on the reaction of arsenic gas with hydrogen ion to form yellow stain on mercuric chloride paper in presence of reducing agents like potassium iodide. ... Arsenious acid is further reduced to arsine (gas) by hydrogen and reacts with mercuric chloride paper to give a yellow stain.

State the use of potassium iodide in iodine tincture

Asked by admin @ 20/08/2021 in Science viewed by 327 persons

State the use of potassium iodide in iodine tincture

Name the compound used for testing co2 gas

Asked by admin @ 29/08/2021 in Chemistry viewed by 337 persons

Name the compound used for testing of co2 gas

Which chemical is used to test for starch

Asked by admin @ 26/08/2021 in Biology viewed by 332 persons

Which chemical is used to test starch? Which colour show's the presence of starch?

Sit and reach test is used to measure

Asked by admin @ 25/08/2021 in CBSE BOARD XII viewed by 418 persons

Sit and reach test is conducted to measure

Why do we use averages are there any limitations

Asked by admin @ 20/08/2021 in Social Sciences viewed by 253 persons

Why do we use average ? are there any limitations to their use ?illustrate with your examples related to development?

Compound used in breath analysis test for drunken driving

Asked by admin @ 20/08/2021 in Chemistry viewed by 292 persons

The compound used in breath analysis test for drunken driving is pottasium iodide

Layer test is used to detect the presence of

Asked by admin @ 20/08/2021 in Chemistry viewed by 312 persons

Describe layer test for Bromide and Iodide ions.

How is blood test useful to diagnose the disease

Asked by admin @ 17/08/2021 in Biology viewed by 349 persons

How blood tests is useful ti diagnose the diseases.explain with daily life situation

Brown ring test is used for the detection of

Asked by admin @ 17/08/2021 in Chemistry viewed by 303 persons

Brown ring test is used for detection of which radical

Why are potassium and caesium used in photoelectric cells

Asked by admin @ 17/08/2021 in Chemistry viewed by 252 persons

Question 10.9 Why are potassium and cesium, rather than lithium used in photoelectric cells? Class XI The s-Block Elements Page 305

In the double displacement reaction between aqueous potassium iodide

Asked by admin @ 12/08/2021 in Chemistry viewed by 348 persons

In double displacement reaction between aqueous potassium iodide and aqueous lead nitrate,a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which …

Iodine solution is used to test the presence of

Asked by admin @ 12/08/2021 in Science viewed by 309 persons

Iodine solution is used to test the presence of...

Benedict's solution is used to test for the presence of

Asked by admin @ 06/08/2021 in Biology viewed by 348 persons

Benedict's solution is used to test the presence of A) CarbohydratesB)FatsC) VitaminsD) Proteins

This liquid is used to test a leaf for starch

Asked by admin @ 05/08/2021 in Science viewed by 289 persons

Before testing the leaf for starch at the end of the experiment "Light is necessary for photosynthesis": (a) In which liquid the leaf should be boiled?(b) Why should the …