The identity of the cation and anion in a salt are investigated using the experimental instructions and the following results are obtained:a colourless gas is evolved when the salt is treated with concentrated nitric acidno precipitate is obtained when the solution resulting from this is further treated with concentrated hydrochloric acidNo precipitate is obtained when the dissolved salt is reacted with 2-2'-bipyridine solution and no blood red solution forms on reaction with a thiocynate (SCN) solutionA flame test reveals a dull brick red colourWhat is the salt?Group of answer choicesFeCO3Ag2CO3CaCO3CaCl2

When sodium reacts with chlorine it forms an ionic salt called .When solid, the normal colour of this salt is .

Another student was given a pale violet solid. He was told that it contained two cations (positiveions) from this listLi+ Ca2+ Fe2+ NH+4 Fe3+He performed a flame test on the solid.He then dissolved a small sample of the solid in water, a yellow solution was formed.He added sodium hydroxide solution and then warmed the mixture.The table shows his observations.Test Observationflame test no positive resultadd sodium hydroxide solution and warm brown precipitatea pungent - smelling gas was evolvedthe gas turned damp red litmus paper blue(i) The flame test gave no positive result.State the two cations from the list that are not present in the solidand(ii) Identify the pungent - smelling gas given off and explain why the red litmus paper must bedamp before it is used.(iii) Identify the two cations present in the pale violet solidand5. Some iron (II) sulfate (FeSO4) is dissolved in water to make a solution.(a) A reaction takes place when sodium hydroxide solution is added to a solution of iron (ⅠⅠ) sulfate.(i) Complete the word equation to show this reaction(ii) State what you would observe in this reaction._______________________________________________________________________________________________________________(b) Barium chloride is used to test for sulfate ions.(i) Barium chloride solution is added to another solution of iron (ⅠⅠ) sulfate. A whiteprecipitate forms. Identify the white precipitate.________________________________________________________________________________________________(ii) In this test, another substance should be added to react with any carbonate ions thatmight be present. Identify this other substance and state one observation that would be madeif carbonate ions were present.Other substance ___________________________________Observation __________________________________________________________________________________(C) A compound with the formula (NH4 )2Fe(SO4)2 gives the same results in the tests in parts (a)and (b) as iron (ⅠⅠ) sulfate (FeSO4). Describe how you could show that a solution of (NH4)2Fe(SO4)2contains ammonium ions.____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

A solution of colourless salt H boiling with excess NaOH produces a non-inflammable gas. The gas evolution ceases after sometime. Upon addition of Zn dust to the same solution, the gas evolution restarts. The colourless salts (H) can be

An unidentified salt was determined to be either KNO3, KNO2 or K2CO3. Upon the addition of hydrochloric acid, a brown gas was observed. The unidentified salt is:

Which is a salt?Multiple choice question.an ionic compound made up of a cation from a base and an anion from an acida solution of known concentration used to titrate a solution of unknown concentrationa solution that resists changes in pH when limited amounts of acid or base are addeda chemical dye whose color is affected by acidic and basic solutions