Question

In the reaction

2K + 2H20 - 2KOH + H2, which compound has an element ratio of 1:1:1

a) КОН
b) H2
c) K

Answer 1

Answer: The compound that has element ratio of 1 : 1 : 1 is KOH

Step-by-step explanation:

Mole ratio is defined as the ratio of number of moles of the two elements combining to form a compound.

In a chemical compound, the subscripts represents the number of moles of elements in a compound.

For the given chemical reaction:

`2K+2H_2O\rightarrow 2KOH+H_2`

`H_2O` has two elements, hydrogen and oxygen and is present in the ratio of 2 : 1

KOH has three elements, potassium, hydrogen and oxygen and is present in the ratio of 1 : 1 : 1

Hence, the compound that has element ratio of 1 : 1 : 1 is KOH

Answer 2

a) KOH

Step-by-step explanation:

In the given balanced reaction

2K + 2H2O → 2KOH + H2

In the compound KOH,

The elements are K,O, and H and in the compound, there is one mole each of K , O ,and H.

So the element ratio here is 1 : 1 : 1.