Question

Which gas obtained by the reaction of FeS with dilute HCl is (29) तनुHCl केसाथ FeS की अलभकिया सेकौन-सी गैस प्राप्त होती है? (A) SO2 (B) SO3 (C) O2 (D) H2S​

Answer 1

Answer:

.✌️

Explanation:

A solution contains 20g of sugar dissolved in 180g water calculate the concentration in tems of mass by mass percentage of solution.

Ans. Sugar dissolves = 20g

Water ( Mass ) = 180g

.°. Total Mass Of The Solution= 180g + 20g

= 200g

Therefore, mass by mass percentage of the solution = Mass of the solute / Total mass of the solution × 100

i.e, 20/200 × 100

=10% Ans.

Answer 2

Answer:

H2S gas

• When dilute HCI is added to part A, FeS will react with dil HCI to form H2S gas which has smell of rotten eggs and will turn lead acetate paper black