Zinc and hydrochloric acid react according to the reaction: Zn ( s ) + 2 HCl ( aq ) → ZnCl 2 ( aq ) + H 2 ( g ) If 0 . 30 mol Zn are added to hydrochloric acid containing 0 . 52 mol of HCl , how many moles of H 2 are produced?

Zinc reacts with hydrochloric acid by the given reaction, Zn ( s ) 1 mol + 2 HCl ( aq ) 2 mol → ZnCl 2 ( aq ) + H 2 1 mol ( g ) Let Zn s completely consumed in the reaction. ∵ 1 mol Zn produces = 1 mol H 2 ∴ 0 . 30 mol Zn will produce = 1 1 × 0 . 30 = 0 . 3 mol H 2 Let HCl completely consumed in the reaction. ∵ 2 mol HCl produces = 1 mol H 2 ∴ 0 . 52 mol HCl will produce = 1 2 × 0 . 52 = 0 . 26 mol H 2 From the above, the HCl gives the least amount of hydrogen gas . Therefore, HCl is a limiting reagent and 0 . 26 mol of hydrogen gas will be produced.

E M B I B E

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE

S C Kheterpal, S N Dhawan and, P N Kapil Solutions for Chapter: Some Basic Concepts of Chemistry, Exercise 18: PROBLEMS FOR PRACTICE

Author:S C Kheterpal, S N Dhawan & P N Kapil

S C Kheterpal Chemistry Solutions for Exercise - S C Kheterpal, S N Dhawan and, P N Kapil Solutions for Chapter: Some Basic Concepts of Chemistry, Exercise 18: PROBLEMS FOR PRACTICE

Attempt the practice questions on Chapter 1: Some Basic Concepts of Chemistry, Exercise 18: PROBLEMS FOR PRACTICE with hints and solutions to strengthen your understanding. Pradeep's Chemistry Vol 1 solutions are prepared by Experienced Embibe Experts.

Questions from S C Kheterpal, S N Dhawan and, P N Kapil Solutions for Chapter: Some Basic Concepts of Chemistry, Exercise 18: PROBLEMS FOR PRACTICE with Hints & Solutions

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 1

If $20.0$ g of $= \frac{44}{73} \times 20 = 12.05 g$ is treated with $20.0$ g of $HCl$ , how many grams of ${CO}_{2}$ will be produced?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 2

Zinc and hydrochloric acid react according to the reaction:
$Zn (s) + 2 HCl (aq) \to {ZnCl}_{2} (aq) + H_{2} (g)$
If $0.30$ mol $Zn$ are added to hydrochloric acid containing $0.52$ mol of $HCl$ , how many moles of $H_{2}$ are produced?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 3

$500$ ${cm}^{3}$ of $0.250 M {Na}_{2} {SO}_{4}$ solution added to an aqueous solution of $15.00 g$ of ${BaCl}_{2}$ resulted in the formation of a white precipitate of ${BaSO}_{4}$ . How many moles and how many grams of ${BaSO}_{4}$ are formed?

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