Question

Question #49955

Answer 1

1(M)

Explanation:

Here's explanation,
`200ml` contains `NH_4Br` `->` 0.2 mol
`1ml` contains `NH_4Br` `->` `0.2/200` mol
`1000ml` contains `NH_4Br` `->` `0.2/200×1000=1` mol
Molarity is the value of mole number containing in 1000ml of a solution.