Equivalent weight of K2Cr2O7 is 49 g/mol. Explanation - K2Cr2O7 in solution gives following ions - K2Cr2O7 + 14H+ + 6e- → 2K+ + 2Cr3+ + 7H2O Here, 6 e- participate in the reaction, hence chemical equivalent is 6. Equivalent weight is calculated by - Z = W / E Z = 294 / 6 Z = 49 g/mol Equivalent weight of K2Cr2O7 in acidic medium is 49 g/mol.

For compounds that function as oxidizing or reducing agents (compounds that act as acceptors or donors of electrons), the equivalent weight is the gram molecular weight divided by the number of electrons lost or gained by each molecule; e.g., potassium permanganate (KMnO 4) in acid solution, 158.038/5 g; potassium dichromate (K 2 Cr 2 O 7), 294.192/6 g; and sodium thiosulfate (Na 2 S 2 O 3 ·5H 2 O), 248.1828/1 g. Dec 12, 2019 · #NEET2020 #JEE #jeemains #NEETChemistry To support me in my journey, you can donate - SHIKHA, State bank of India, Halu Bazzar, Bhiwani or via (@paytym or phonepe) Phone pe - 7232848802 IFSC code ... Potassium Dichromate K2Cr2O7 Molar Mass, Molecular Weight. 2 K2CrO4 + H2SO4 = K2Cr2O7 + K2SO4 + H2O

Syn. Equivalent weight, gram-equivalent. Gram-equivalent weights for various cases: 1. Complex ion. The gram-equivalent weight of a complex ion is equal to the formula weight of the ion divided by its valence. Examples. The gram-equivalent weight of the OH -ion is 16.000 + 1.008 = 17.008 g and of the Ca ++ ion is 40.08/2 = 20.04 g. 2. Acid. Aug 09, 2009 · Potassium dichromate formula is K2Cr2O7 and its formula weight is 294.18 and its equivalent mass is 49.03(molar=6 normal)

Strength = Normality x Equivalent weight = (1/20) x 392 = 19.6 g/L. For preparing 250ml of N/20 Mohr’s salt solution, Mohr salt required = (19.6/1000) x 250 = 4.9 gm. Weigh an empty watch glass using a chemical balance. Weigh accurately 4.9gm of Mohr’s salt in a chemical balance.

›› K2Cr2O7 molecular weight. Molar mass of K2Cr2O7 = 294.1846 g/mol. This compound is also known as Potassium Dichromate. Convert grams K2Cr2O7 to moles or moles K2Cr2O7 to grams. Molecular weight calculation: 39.0983*2 + 51.9961*2 + 15.9994*7 ›› Percent composition by element