Chemistry

A solution of X2CO3 has a concentration of 15.2 g/dm^3. 25 cm^3 of this solution require 27.5 cm^3 of 0.2 M HCl for complete reaction. Calculate the ralative atomic mass of X

  1. 👍 0
  2. 👎 0
  3. 👁 176
asked by Lily
  1. 1 dm^3 = 1000 cm^3 = 1 liter
    so

    X2CO3 is 15.2 g/liter

    a liter of this requires 27.5/25 or 1.1 liters of .2 M HCl
    1.1 * .2 = .22 mols of HCL

    X2CO3 + 2 HCl --> 2 XCl + H2CO3 maybe?

    so we only need .11 mols of X2CO3
    .11 mols of X2CO3 weigh 15.2 grams
    1 mol X2CO3 weighs 138 grams
    C is 12
    O3 is 48
    138 - 12 - 48 = 78
    so X2 is 78 so x is 39
    (Potassium? K2CO3 )

    1. 👍 0
    2. 👎 0
    posted by Damon

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    A is a solution of hcl containing 7.30gdm^-3 and B is a solution of X2CO3 containing 10.6gdm^-3.calculate the concentration of A in Moldm^-3

    asked by Caleb on June 29, 2015
  2. Chemistry

    A 0.75 g sample of X2CO3 is dissolved in water and 80 mL of 0.20 M CaCl2 solution is added. This is the balanced equation I have created. X2CO3(aq) + CaCl2(aq) → CaCO3(s) + 2 XCl(aq) Based on the ratio in your balanced equation,

    asked by Kelly on March 20, 2017
  3. CHEMISTRY

    A is a solution of trioxonitate acid of an unknown concentration, B is a standard solution of sodium hydroxide containing 4.00g per dm3 of solution 25cm3 portion of solution B require an average of 24cm3 of solution A for complete

    asked by AROWOLO TEMITOPE on July 11, 2018
  4. CHEMISTRY

    A is a solution of trioxonitate acid of an unknown concentration, B is a standard solution of sodium hydroxide containing 4.00g per dm3 of solution 25cm3 portion of solution B require an average of 24cm3 of solution A for complete

    asked by Arowolo on July 11, 2018
  5. Chemistry

    A is a solution of trioxonitrate (V) acid. HNO of unknown concentration B is standard solution of sodium hydroxide containing 4.00g per dm3 of solution 25cm3 portion solution B required an average of 24.00cm3 of solution A for

    asked by EMMANUEL on June 6, 2018
  1. science

    1. Which of the following is TRUE regarding this situation: Solution A has a pH of 7.38, and Solution B has a pH of 7.42? a.Solution B is more acidic than Solution A b.The pH of Solution A falls within the homeostatic pH range for

    asked by a on January 28, 2013
  2. chemistry

    A is a solution of trioxonitrate(v) acid, HNO3, of unknown concentration. B is standard solution of sodium hydroxide containing 4.00g per dm3 of solution. 25cm3 portions solution B required an average of 24.00cm3 of solution A for

    asked by oward on May 24, 2016
  3. Chemistry

    A is a solution of trioxonitrate (v)acid, HNO3 of unknown concentration.B is standard solution of sodium hydroxide containing 4.00g per dm3 of solution. 25 cm3 portion solution B required an average of 24.00cm3 of solution A for

    asked by Ogbaji on June 6, 2018
  4. Chemistry

    0.1825 g of Fe(NH4)2(SO4)2•6H2O is dissolved in 250.00 mL of solution; this is Solution A. 5.00 mL of Solution A is transferred to another flask, and it is diluted to a total of 100.0 mL to make another solution, which is

    asked by Anonymous on October 16, 2017
  5. Chemistry

    3. 0.1825 g of Fe(NH4)2(SO4)2•6H2O is dissolved in 250.00 mL of solution; this is Solution A. 5.00 mL of Solution A is transferred to another flask, and it is diluted to a total of 100.0 mL to make another solution, which is

    asked by Anonymous on October 16, 2017

More Similar Questions