Chemistry WAEC

What is the change in oxidation number of manganes in the reaction represented by the following equation? MnO-4(aq) + 8H+(aq) + 5e- → Mn2+(aq) + 4H2O(l)

A. +3 to + 2
B. + 4 to + 2
C. + 5 to + 2
D. + 7 to 2

Correct Answer: Option D

D. + 7 to 2

AddThis Website Tools
Sunday

Share
Published by
Sunday
Tags: Chemistry
5 years ago

Recent Posts

MAC 313 Theory Questions: Types of News in Journalism and Their CharacteristicsMAC 313 Theory Questions: Types of News in Journalism and Their Characteristics

MAC 313 Theory Questions: Types of News in Journalism and Their Characteristics

300 Level Department of Mass Communication exam questions and detailed answers. Download the answers in document…

49 mins ago
MAC 313 Theory Questions: Major Social Problems in Nigeria: Causes and ImpactsMAC 313 Theory Questions: Major Social Problems in Nigeria: Causes and Impacts

MAC 313 Theory Questions: Major Social Problems in Nigeria: Causes and Impacts

300 Level Department of Mass Communication exam questions and detailed answers. Download the answers in document…

54 mins ago
MAC 313 Theory Questions: The Three Arms of Government in Nigeria and Their FunctionsMAC 313 Theory Questions: The Three Arms of Government in Nigeria and Their Functions

MAC 313 Theory Questions: The Three Arms of Government in Nigeria and Their Functions

300 Level Department of Mass Communication exam questions and detailed answers. Download the answers in document…

1 hour ago

MAC 313 Theory Questions: Strategic Relationships for Covering the Executive Arm of Government

300 Level Department of Mass Communication exam questions and detailed answers. Download the answers in document…

1 hour ago

MAC 313 Theory Questions: Operational Security Measures for Journalists Meeting Confidential Sources

300 Level Department of Mass Communication exam questions and detailed answers. Download the answers in document…

2 hours ago

MAC 313 Theory Questions: Essential Journalistic Principles for Reporting Social Problems

300 Level Department of Mass Communication exam questions and detailed answers. Download the answers in document…

2 hours ago