CBSE Class 10 Answered
A Grey coloured metal'Z'(Atomic weight=65)is used in making dry cell.It reacts with dil. HCL to liberate gas.What is the gas evolved?Calculate the minimum amount of'Z'required to produce100 litres of gas?
Asked by | 20 Aug, 2011, 12:38: PM
Expert Answer
The metal is Zinc.
It liberates hydrogen gas on reaction with HCl. The reaction is as follows:
Zn+ 2HCl ----> ZnCl2 + H2
So, the evolved gas is hydrogen.
From the reaction, 1 mole Zn will produce 1 mole Hydrogen
produced hydrogen is give 100 litres.
volume = moles x 24,000 cm3
(1000 cm3 = 1litres)
100 litres hydrogen = moles x 24,000/1000 litres
moles =100/ 24 = 4.16
So, 4.16 moles of hydrogen is being evolved. This will require 4.16 mole of Zn to react.
Answered by | 23 Aug, 2011, 04:36: PM
Application Videos
Concept Videos
CBSE 10 - Chemistry
Asked by sagarmishra | 04 Mar, 2024, 09:50: AM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by 09.10bjanvhijadhav | 02 Mar, 2024, 08:22: AM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by prassanna.j | 01 Mar, 2024, 11:59: AM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by yadavparmit83 | 01 Dec, 2023, 06:16: AM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by susrisangita792 | 17 Nov, 2023, 08:27: PM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by ramjilal01071988 | 14 Oct, 2023, 08:42: PM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by dikshantnaik1008 | 21 Jul, 2023, 11:47: AM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by susrisangita792 | 07 Jun, 2023, 11:54: AM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by shoaibhakak41 | 18 Jan, 2023, 02:17: PM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by nehashekh291 | 03 Jan, 2023, 03:11: PM
ANSWERED BY EXPERT