Physical Chemistry Answers

A solution containing Na2CO3 and NaOH requires 300ml of 0.1 N HCl using phenolpthalein as an indicator. Methyl orange is then added to the above titrated solution when a further 25ml 0f 0.2N HCl is required. the amount of NaOH present in soultion is?

A solution of 0.01m concentration of nh4oh is 2.6% dissociated, calculate the ph of the solution.

Find the concentrations of [H]+,hco3-,and co3-2 in a 0.01m solution of carbonic acid if the ph of solution is 4.18.[k1=4.45*10^-7 k2=4.69*10^-11]

Calculate the [h+] of a solution containing 0.01m chcl2cooh and 0.002m chclcoona.ka for ch2clcooh=136*10^-5

What are the energy values for each 4 quantum number?

1.3 What is the use of hydrogen gas at 40% for 50ml of h2so4, which is recommended for hydrophilic gas, which is recommended by zodiac sulphate.

Solution of 0.1g KIO3 has been used to cure any of the symptoms of HCL, but it is possible to treat the thiosalphate varies from 45.0 ml to the same level, so that the thososalphate is available

what will be the ph of the solution is zero point zero one mole of hcl is dissolved in a buffer solution containing zero point zero to propanoic acid k e equal to one point three four into ten to the power minus five and zero point zero one five two moles of salt at twenty five degree celsius

a solution is 0.1M in cl^-,0.01M in br^-,0.001M in I^-, agno3 is added to the solution [v mix=0].the concentration of ag+required to start precipitation of all 3 ions is [given,ksp of agcl is 10^-10,ksp of agbr is 10^-13,ksp of agI=10^-7]

A stream of water vapor flowing at a rate of 250 mol/h is brought from 600 degrees Celsius and 10 bar to 100 degrees Celsius and 1 atm. Estimate the required cooling rate in kW using the following three methods:
a. steam tables
b. using specific heat capacity data
c. using specific enthalpy data

which of those answers should be the most accurate and why?

what is the physical significance of the difference between the values calculated with methods 1 and 2?