duestn43 A compound consists of mainly two elements, the first element could not

Question

duestn43 A compound consists of mainly two elements, the first element could not be identifies by usual chemical tests, but when a solution of the Not yet answered ane u relement s heate a very nigh temperatures the sample gives a llac Marked out of 1 flame. The second element reacts with Ag' solutions to give a white powder. What is the formula for this compound? P Flag question Select one O a. KCI b. NaCl s4 The color of the preciptate arter adding Naos to the Question The color of the precipitate after adding NaOH to the Fe is red brown? yet answered Select one True False Marked out of 1 P Fag question o 45 Net yet answered When a balance was adjusted to zero, the reading was 0,000 g and when an object was weighed using this balance the reading of the balance will be: Marked out of 1 Flag suestion Select one: a. 4.9854g ± 0.0001 b. 4.911 g : 0.001 OC. 4.99 g +0.01 d.4.995 g ±001 Potassium hydrogen phthalate was used in standardization of sodium Not yeared h et amatred hydroxide (NaOH) because Not yet anwered Harked out of 1 Select one

Explanation / Answer

Question 43 ) If  metals are placed into a flame and it change colour. Different metals give different colours to the flame, so flame tests can be used to identify the presence of a particular metal.

Potassium burn into lilac flame.

So , metal is K

Now , Second hint is that element react with Ag+ powder to give white powder and definately the element is Cl

So , Answer is KCl

44 )

The sodium is the more reactive metal, and displaces the transition metal from its compound. The transition metal hydroxide is produced as a result. It is displacement reaction.

Iron(II) hydroxide

Answer : False ( not red Brown)

Fe2+

Iron(II) hydroxide

Green

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