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Using Concentrations Of Solutions In Mol/dm 3 (chemistry Only) (ht Only) (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Using Concentrations Of Solutions In Mol/dm 3 (chemistry Only) (ht Only)' from the broader topic Quantitative Chemistry. The test is geared towards the AQA exam board style syllabus.
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During a titration the concordant titres are 23.45, 23.55 and 23.50 cm3. Which value should be used for calculations and why?
In a titration 25.00 cm3 of Na2CO3 solution requires 23.50 cm3 of 0.100 mol/dm3 HCl to reach the end point for the reaction Na2CO3 + 2 HCl ? 2 NaCl + CO2 + H2O. What is the concentration of Na2CO3 in mol/dm3?
You have 0.250 dm3 of 0.120 mol/dm3 CaCl2. How many grams of CaCl2 (Mr = 110.98) are present?
In a precipitation experiment 10.0 cm3 of 0.100 mol/dm3 AgNO3 is mixed with 10.0 cm3 of 0.100 mol/dm3 NaCl. What is the concentration of Ag+ (in mol/dm3) remaining if 0.00800 mol of AgCl precipitates? (Assume total volume 20.0 cm3)
You titrate 25.00 cm3 of unknown acid and use 15.00 cm3 of 0.100 mol/dm3 NaOH. If the acid is monoprotic, what is its concentration?
You have 0.120 mol of solute in 300 cm3. If you add water until the concentration is 0.0600 mol/dm3, what volume in cm3 will the solution be?
A solution labelled 0.100 mol/dm3 KOH is diluted by adding 100 cm3 of water to 100 cm3 of the solution. What is the new concentration?
A 0.200 mol/dm3 solution is prepared by dissolving solute in 500 cm3. How many moles were needed?
In a titration, 25.0 cm3 of H2SO4 requires 30.0 cm3 of 0.100 mol/dm3 NaOH to reach the endpoint for H2SO4 + 2 NaOH ? Na2SO4 + 2 H2O. What is the concentration of H2SO4 in mol/dm3?
A graduated cylinder reads to ±0.10 cm3. You use it to measure 25.0 cm3 for a titration. Which uncertainty should you quote for that volume?
If 0.0150 mol of MgCl2 is dissolved to make 250 cm3 of solution, what is the molar concentration?