For which entalphy changes is the value of ΔH always negative? 1- combustion
2-hydration
3-solution

( the answer choices is a, b,c, d)
a) 1,2 & 3 are correct
b) 1 & 2 are correct
c) 2 & 3 are correct
d) 1 only is correct

Examine these two msds from different manufacturers for sodium hydroxide (naoh). compare and contrast the following aspects: chemical names, chemical properties, order of components, health hazards, and proper disposal. click on each of the links to examine two msds reports from different sources. sodium hydroxide version 1 sodium hydroxide version 2