Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

NEET Class neet Answered

342g of 20% by mass of b a Ba(OH)2 solution (sp. gr.=0.57) is reacted with 1200 mL of 2M HNO3. If the final density of solution is same as pure water then molarity of the iron in resulting solution which decides the nature of the above solution is— (1)0.25M,(2)0.5M,(3)0.888M,(4)none of these.
Asked by patra04011965 | 24 May, 2019, 08:52: AM
answered-by-expert Expert Answer
The mass of Ba(OH)2 is 342 g.
The molar mass of Ba(OH)2 is 171 gm
Hence,
1 mole of Ba(OH)2 is the molar mass of Ba(OH)2 is 171 gm
So, for 342 g. wil be x
 
straight x equals 342 over 171 equals space 2 space moles
We know 100% by mass is 2moles hence 20% will be x.
 
straight x space equals space fraction numerator 20 cross times 2 over denominator 100 end fraction space 0.4 space moles
 
The space total space moles space of space Ba left parenthesis OH right parenthesis subscript 2 space equals space 2 space cross times space 0.4 space equals space 0.8
 
As given the molarity of HNO3 is 2M, So, the total moles=
 
 straight M space equals space fraction numerator straight n cross times 1000 over denominator straight V end fraction straight n space equals space fraction numerator 2 cross times 1200 over denominator 1000 end fraction straight n space equals space 2.4 space moles
 
 
Total acidic excess moles = 2.4 - 0.8 = 1.6
 
The total volume of Ba(OH)2 is straight d space equals space straight w over straight v straight v space equals space fraction numerator 342 over denominator 0.57 end fraction space equals space 600 ml
 
The volume of HNO3 is 1200ml
 
Hence the total volume of Ba(OH)2 = 1200+600 =1800 ml
 
straight M space equals fraction numerator straight n cross times 1000 over denominator straight V end fraction straight M space equals space fraction numerator 1.6 cross times 1000 over denominator 1800 end fraction straight M space equals space 0.88 straight M
Answered by Ramandeep | 24 May, 2019, 11:02: AM
Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
NEET neet - Chemistry
An element forms an oxide, in which the oxygen is 20% of the oxide by weight, the equivalent weight of the given element will be
Asked by waghs4548 | 09 Aug, 2024, 20:51: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
what weight of h20 formed
question image
Asked by kishusambhar | 05 Jun, 2024, 11:31: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
An oxide metal have 20% oxygen the equivalet weight of oxide is
Asked by laxmiprmarlaxmiprmar | 02 Jun, 2024, 01:10: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
which contains greater number of oxygen atoms
question image
Asked by priyankasahoo0086 | 22 May, 2024, 06:36: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
if carbon(6g) reacts with oxygen(32g) and gives carbon dioxide (22g)
question image
Asked by sahumansi | 12 May, 2024, 09:37: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
The Weight of the molecule of the compound C(60) H(122)
question image
Asked by biswassayan8464 | 21 Apr, 2024, 11:30: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
what is the molarity of solution of 5.85 gram NaCl present in 100 ml solution
Asked by mahendar160786 | 16 Apr, 2024, 21:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
number of oxygen atoms in 8gms of ozone is
question image
Asked by muskannawab11 | 14 Apr, 2024, 15:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
25ml of a solution of barium hydroxide on titration with a0.1molar solution of HCl gave titre value of 35mL. The molarity of barium hydroxide solution was
question image
Asked by tarasingrathod63 | 07 Apr, 2024, 13:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
which is the correct answer
question image
Asked by fathimahusna6122 | 05 Apr, 2024, 10:25: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt