Procedure: 1. Add one drop of methanoic acid, ethanoic acid, propanoic acid, lactic acid and oxalic acid on separate blue litmus paper 2. Observe the change in color

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A: Identify each peak (peak splitting and ppm) and identify the unknown compound.

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Q: The molar solubility of nickel(II) sulfide in a water solution is M.

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A: Li2CO3 = 2Li+ +CO3 2- Ksp=[Li+]2 × [CO3 2-] =( 0.294)^2 × 0.147 = 1.27×10^-2.

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