Calculate the concentration of nitrate ions in the

Assignment Help Chemistry

Reference no: EM13345605

You need to make a solution of Ca(NO3)2 for a class demonstration. First, you measure a quantity of the solid Ca(NO3)2 by weighing the reagent container before obtaining the sample (4.2540 ± 0.0003 g) and after taking some reagent (3.9440 ± 0.0003 g). You were about to transfer the Ca(NO3)2 into a 100- ml volumetric flask, but notice that you forgot to wash it the previous week and there is something green growing in it. So rather than cleaning the volumetric flask, you instead decide to just use a beaker and fill it to a final volume of 0.100 ± 0.005 L. The molar mass of Ca(NO3)2 is 164.10 g/mol, and its uncertainty is negligible (i.e. treat it as a constant).

a. Calculate the concentration of nitrate ions in the resulting solution (don't forget about the stoichiometry), and determine the uncertainty in that value. What is the primary contribution to the uncertainty?

b. A typical 100-ml volumetric flask has an uncertainty of ± 0.12 ml. If you had made the above solution in a volumetric flask instead of the beaker, what would have been the resulting concentration and uncertainty?

Reference no: EM13345605

Questions Cloud

A 200 ml stock solution contains 09 m cacn2 when 100 ml of : a 200 ml stock solution contains 0.9 m cacn2. when 100 ml of the stock solution is diluted to 120 ml how many moles of

A sample of ethanol c2h5oh has a mass of 438 : a sample of ethanol c2h5oh has a mass of 43.8 g.a how many carbon atoms does the sample contain?b how many hydrogen

A 14 ml solution of succinic acid has a concentration of 10 : a 14 ml solution of succinic acid has a concentration of 10 mm. this solution is titrated with 8 mm lithium hydroxide.

1 what is the molarity of a kfaq solution containing 116g : 1 what is the molarity of a kfaq solution containing 116g of kf in 1.00 l of solution?2 what is the molarity of an

Calculate the concentration of nitrate ions in the : you need to make a solution of cano32 for a class demonstration. first you measure a quantity of the solid cano32 by

Which of the following is a typical property of an ionic : which of the following is a typical property of an ionic compound?a a low melting pointb poor conductor of electric

For a vertical cylinder with an electric heater 2500watt at : for a vertical cylinder with an electric heater 2500watt at the basean inletlower part of cylinder with cold water at

Consider a coil which has a resistance of 0314omega and : consider a coil which has a resistance of 0.314omega and an inductance of 0.002 h being supplied by 240 vrms 50 hz ac

To obtain ksp for pbi2 we must calculate pb2 in each : from the experimental data we obtain i- directly. to obtain ksp for pbi2 we must calculate pb2 in each equilibrium

User Account

All Pages