Most of the salt compounds containing SO 4 are soluble in water. Understand that most sulfate salts are soluble.For example: Compounds like CaCO 3, PbCrO 4, and Ag 3PO 4 are all insoluble while compounds like Na 3PO 4 and (NH 4) 2CO 3 are soluble.Exceptions to this rule include the Group 1A metals and NH 4 + compounds which are soluble. The chemical formulas for each of these are as follows: CO 3 (carbonates), CrO 4 (chromates), and PO 4 (phosphates). Know that most carbonates, chromates, and phosphates are insoluble.Note that PbCl 2, PbBr 2, and PbI 2 are soluble in HOT water.For example: AgCl and Hg 2Cl 2 are both insoluble.Compounds consisting of these nonmetals and ions are not soluble. Exceptions to this rule include silver, lead, and mercury. Group 17 nonmetals include chlorine (Cl -), bromine (Br -), and iodine (I -). Recognize that salts containing Group 17 nonmetals are generally soluble.For example: Fe(OH) 3, Al(OH) 3, and Co(OH) 2 are insoluble, but LiOH and NaOH are soluble.The exception to this rule is that hydroxide salts formed with Group 1 elements are soluble because Group 1A elements are always soluble. Some hydroxide salts are slightly soluble: hydroxides formed with Group 2 elements (Ca, Sr, and Ba). Know that most hydroxide compounds are insoluble.For example: NH 4OH is soluble even though it contains a hydroxide.The ammonium ion, NH 4 +, makes salt compounds that completely dissociate in the presence of water. Understand that all ammonium salts are soluble.For example: KNO 3, NaClO 3, and CH 3COONa are all soluble.When a nitrate, NO 3 -, chlorate, ClO 3 -, or acetate, CH 3COO -, form a salt, they are soluble in water. Know that salts containing nitrates, chlorates, and acetates are soluble.For example: KCl and LiOH are soluble in water.They are the alkali metals and include Li, Na, K, Cs, and Rb. The first column of the table contains the Group 1A elements. The periodic table is organized into rows and columns called periods and groups, respectively. Recognize that salts containing Group 1A elements are soluble.You have signed an examinee agreement, and it will be enforced on this subreddit.ĭo not intentionally advertise paid or free products or services of any sort. We have one "stickied" post for each exam and score release day, contain all test day discussion/reactions to that thread only.ĭo not discuss any specific information from your actual MCAT exam. For an example format for submitting pictures of questions from practice material click hereĭo not link to content that infringes on copyright laws (MCAT torrents, third party resources, etc).ĭo not post repeat "GOOD LUCK", "TEST SCORE", or test reaction posts. These are considered spoilers and should be marked as such. Be nice to each other, hating on other users won't help you get extra points on the MCAT, so why do it?ĭo not post any question information from any resource in the title of your post. Rudeness or trolling will not be tolerated. Please message the moderators with your skills/ideas! MCAT RESOURCES & INFO Study Groups Want to help us improve this subreddit or tell us about a new resource we can add to the sidebar? Below you will find our forum rules, resources, and more. We request that you read the sidebar COMPLETELY before you post. ![]() r/MCAT is a place for support, discussion, advice, social networking, news, study tips and more. ![]() The MCAT (Medical College Admission Test) is offered by the AAMC and is a required exam for admission to medical schools in the USA and Canada. ![]() Welcome to the BEST place for MCAT prep and practice materials.
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