Question

0.400 m kbr
express your answer with the appropriate units.
br⁻ = value units
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part b
0.190 m cabr₂
express your answer with the appropriate units.
br⁻ = value units
submit request answer

Explanation:

Step1: Analyze KBr dissociation

KBr dissociates as KBr → K⁺ + Br⁻. The mole - ratio of KBr to Br⁻ is 1:1. Given [KBr]=0.400 M, so [Br⁻]=0.400 M.

Step2: Analyze CaBr₂ dissociation

CaBr₂ dissociates as CaBr₂ → Ca²⁺ + 2Br⁻. The mole - ratio of CaBr₂ to Br⁻ is 1:2. Given [CaBr₂]=0.190 M, then [Br⁻]=2×0.190 M = 0.380 M.

Answer:

Part A:
[Br⁻]=0.400 M
Part B:
[Br⁻]=0.380 M