Question

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1) Write down the dissolution equation for rubidium chromate dissolving in water. (Chromate is a polyatomic ion with the formula CrO42-.) If two moles of the ionic compound are dissolved, then how many moles of the CATION are present in the solution?
2) Calculate the concentration of chromate ion, CrO42–, in a saturated solution of CaCrO4 (Ksp=7.1×10^–4)
3) Substances which will conduct electricity in the form given:
- FeSO4(s)
- 1M HNO3 in water
- sand
- 0.1M glucose (sugar) water
- 0.1M solution of lithium sulphate
4) A solution is known to contain