K2S. a potassium ion has a charge of 1+. Ionic Compounds, Naming and Formula Writing. The name of this compound is potassium sulfide. Copy this to my account; E-mail to a friend ... Start over; Help; This activity includes every compound formula and name that can be formed from the list 44 Ions provided in Chemistry A at Pickerington High School Central. An ionic formula, like \(\ce{NaCl}\), is an empirical formula. Potassium sulfide is the inorganic compound with the formula K 2 S.The colourless solid is rarely encountered, because it reacts readily with water, a reaction that affords potassium hydrosulfide (KSH) and potassium hydroxide (KOH). The formula for potassium hydrogen sulfide is KHS. Structure, properties, spectra, suppliers and links for: Potassium sulfide, 1312-73-8. So readily oxidized as to be pyrophoric in air [Bretherick 1979 p. 120]. POTASSIUM SULFIDE is a reducing agent. Properties. Another name for this inorganic compound is potassium hydrosulfide. ion. A sulfide ion has a charge of 2-. It is incompatible with chloroform and nitrogen oxide. Sometimes it is not pure and it is yellow-brown. The potassium is in its +1 oxidation state. polyatomic. ... Chemical Formula: K2S4 (potassium polysulfide) K2S (potassium sulfide) Flash Point: data unavailable. This formula merely indicates that sodium chloride is made of an equal number of sodium and chloride ions. ›› Potassium Sulfide molecular weight. This formula indicates that this compound is made up of twice as many sodium ions as sulfide ions. Magnesiumoxide. One of the most important things to remember about ionic compounds is that they must be electrically neutral.. Molar mass of K2S = 110.2616 g/mol. Sodium sulfide, another ionic compound, has the formula \(\ce{Na_2S}\). Molecular: cobalt(III) bromide + potassium sulfide Molecular: 2 CoBr3 (aq) + 3 K2S(aq) Co2S3 (s) + 6 KBr (aq) Total Ionic: 2 Co3+ (aq) + 6 Br¯ (aq) + 6 K+ (aq) + 3 S2-(aq) Co 2S3 (s) + 6 K + (aq) + 6 Br¯ (aq) Net Ionic: 2 Co3+ (aq) + 3 S2-(aq) Co 2S3 (s) 10. Potassium sulfide is a colorless solid when it is pure. Convert grams Potassium Sulfide to moles or moles Potassium Sulfide to grams. Most commonly, the term potassium sulfide refers loosely to this mixture, not the anhydrous solid. Net Ionic: No Reaction 9. Its chemical formula is K 2 S. It contains potassium and sulfide ions. Ions that are made of more than 1 atom. Molecular weight calculation: 39.0983*2 + 32.065 ›› Percent composition by element Potassium sulfide is a chemical compound. Its molar mass is 72.17 grams per mole, and it is soluble in water. This means that the overall positive charge of the cations must be balanced by the overall negative charge of the anions.. Tools. Name the following compound: MgO. 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