Question

How many bromide ions are there in 1.5 moles of MgBr2??

Answer 1

Moles of Br- is mathematically given as

moles of Br-=28*10^{2}

Option A

Moles of Br-

The chemical reaction is

MgBr2 ----> Mg+2 + 2Br-

Let 940mL be present

Generally the equation for the Morarity  is mathematically given as

molarity = moles / volume (L)

Therefore

1.5 = moles / 940 x 10-3

moles = 1400

Hence, moles of MgBr2 is 1.0125

Therefore

moles of Br- = 2 x moles of MgBr2

moles of Br- = 2 x 1400

moles of Br-=28*10^{2}

Mor on Molecules

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