in Education by
Calculate the molarity of eaCHM of the following solutions : a.30g of Co(NO3)2.6H2O in 4.3L of solution b.30mL of 0.5MH2SO4 diluted to 500mL . Select the correct answer from above options

1 Answer

0 votes
by
Correct Answer - a.0.024M,b.0.03m a. MwofCo(NO3)2.6HO=58.7+2(14+48)+6×18 =310.78gmol-1 M= W2×1000 Mw2×Vsol(inmL) = 30g×1000 310.7gmol-1×4300mL =0.02M b . M1V1=M2V2 0.5×30mL=M2×500 :M2=0.03M

Related questions

0 votes
    An antifreeze solution is prepared from 222.6g of ethylene glycol [C2H4(OH)2] and 200g of water. Calculate the ... of the solution? Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    Calculate the amound of benzoic acid (C6H5COOH) required for preparing 250mL of 0.15M solution in methanol. Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    A solution of Ni(NO3)2 is electrolyzed between platium electrodes using a current of 5A for 20min . What mass of ... at the cathode ? Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    What is the relation between molar conductivity (∧m) and equivalent conductivity (∧eq) of potash alum [K2SO4.Al2(SO4)3.24H2O ? Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    An aqueous solution of K2SO4 is diluted by adding water. How the values of G,k,∧m and ∧eq vary ? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
    The decomposition of dimethyl ether leads to the formation of CH4,H2, and CO and the reaction rate is given by ... and rate constant ? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
    Why Zn reacts with dilute H2SO4 to give H2 gas but Cu does not ? Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    Define the term solution. How many types of solutions are formed ? Write briefly about eaCHM type with an example. Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    How muCHM electricity is required in coulomb for the oxidation of ltbr. a. 1molofH2O→O2 b . 1m∞l of FeO to Fe2O3 Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    Predict the products of electrolysis in eaCHM of the following : a. An aqueous solution of AgNO3 with silver ... platinum electrodes. Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    Nalorphene (C19H22NO3) , similar to morphine , is used to combat withdrawal symptoms in narcotic users. The dose of ... the above dose. Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    Calculate the mass of urea (NH2CONH2) required in making 2.5kg of 0.25 molal aqueous solution. Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    If the solubility product of CuS is 6×10-16 , calculate the maximum molarity of CuS in aqueous solution. Select the correct answer from above options...
asked Jan 5, 2022 in Education by JackTerrance
0 votes
    Complete the equations for the following nuclear processes: (a) . 35 17 C l + . 0 1 n → ... + . 4 2 H e . (b) . ... u ( α , β − ) ... . Select the correct answer from above options...
asked Jan 2, 2022 in Education by JackTerrance
0 votes
    A can hit a target 4 times in 5 shots, B can hit 3 times in 4 shots, and C can hit 2 times in 3 shots ... A does not hit the target. Select the correct answer from above options...
asked Nov 16, 2021 in Education by JackTerrance
...